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Finding the Fourth Proportional to 15,072.19, 20,799.24 and 8,357.71

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Solution

The fourth proportional to 15,072.19, 20,799.24 and 8,357.71 is: 11,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.19 : 20,799.24 = 8,357.71 : x
  2. Step 2: Convert to fraction form
    15,072.19/20,799.24 = 8,357.71/x
  3. Step 3: Cross multiply
    15,072.19x = 20,799.24 × 8,357.71
  4. Step 4: Simplify right side
    15,072.19x = 173,834,016.14
  5. Step 5: Solve for x
    x = 173,834,016.14/15,072.19
  6. Step 6: Final answer
    x = 11,533.43

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Half scale
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Double scale
Find fourth proportional to 15,073.19, 20,800.62 and 8,358.71
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.