Home / 15,071.28-20,798.40-8,357.19

Finding the Fourth Proportional to 15,071.28, 20,798.40 and 8,357.19

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Solution

The fourth proportional to 15,071.28, 20,798.40 and 8,357.19 is: 11,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.28 : 20,798.40 = 8,357.19 : x
  2. Step 2: Convert to fraction form
    15,071.28/20,798.40 = 8,357.19/x
  3. Step 3: Cross multiply
    15,071.28x = 20,798.40 × 8,357.19
  4. Step 4: Simplify right side
    15,071.28x = 173,816,180.50
  5. Step 5: Solve for x
    x = 173,816,180.50/15,071.28
  6. Step 6: Final answer
    x = 11,532.94

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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.