Home / 28,287.16-39,037.62-15,711.96

Finding the Fourth Proportional to 28,287.16, 39,037.62 and 15,711.96

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Solution

The fourth proportional to 28,287.16, 39,037.62 and 15,711.96 is: 21,683.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.16 : 39,037.62 = 15,711.96 : x
  2. Step 2: Convert to fraction form
    28,287.16/39,037.62 = 15,711.96/x
  3. Step 3: Cross multiply
    28,287.16x = 39,037.62 × 15,711.96
  4. Step 4: Simplify right side
    28,287.16x = 613,357,523.94
  5. Step 5: Solve for x
    x = 613,357,523.94/28,287.16
  6. Step 6: Final answer
    x = 21,683.25

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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.