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Finding the Fourth Proportional to 15,071.48, 20,799.75 and 8,357.05

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Solution

The fourth proportional to 15,071.48, 20,799.75 and 8,357.05 is: 11,533.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.48 : 20,799.75 = 8,357.05 : x
  2. Step 2: Convert to fraction form
    15,071.48/20,799.75 = 8,357.05/x
  3. Step 3: Cross multiply
    15,071.48x = 20,799.75 × 8,357.05
  4. Step 4: Simplify right side
    15,071.48x = 173,824,550.74
  5. Step 5: Solve for x
    x = 173,824,550.74/15,071.48
  6. Step 6: Final answer
    x = 11,533.34

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Half scale
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Double scale
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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.