Home / 15,602.28-21,531.56-9,318.28

Finding the Fourth Proportional to 15,602.28, 21,531.56 and 9,318.28

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Solution

The fourth proportional to 15,602.28, 21,531.56 and 9,318.28 is: 12,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.28 : 21,531.56 = 9,318.28 : x
  2. Step 2: Convert to fraction form
    15,602.28/21,531.56 = 9,318.28/x
  3. Step 3: Cross multiply
    15,602.28x = 21,531.56 × 9,318.28
  4. Step 4: Simplify right side
    15,602.28x = 200,637,104.92
  5. Step 5: Solve for x
    x = 200,637,104.92/15,602.28
  6. Step 6: Final answer
    x = 12,859.47

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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.