Home / 28,285.16-39,034.50-15,711.08

Finding the Fourth Proportional to 28,285.16, 39,034.50 and 15,711.08

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Solution

The fourth proportional to 28,285.16, 39,034.50 and 15,711.08 is: 21,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.16 : 39,034.50 = 15,711.08 : x
  2. Step 2: Convert to fraction form
    28,285.16/39,034.50 = 15,711.08/x
  3. Step 3: Cross multiply
    28,285.16x = 39,034.50 × 15,711.08
  4. Step 4: Simplify right side
    28,285.16x = 613,274,152.26
  5. Step 5: Solve for x
    x = 613,274,152.26/28,285.16
  6. Step 6: Final answer
    x = 21,681.83

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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.