Home / 28,260.64-39,001.50-15,685.39

Finding the Fourth Proportional to 28,260.64, 39,001.50 and 15,685.39

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Solution

The fourth proportional to 28,260.64, 39,001.50 and 15,685.39 is: 21,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.64 : 39,001.50 = 15,685.39 : x
  2. Step 2: Convert to fraction form
    28,260.64/39,001.50 = 15,685.39/x
  3. Step 3: Cross multiply
    28,260.64x = 39,001.50 × 15,685.39
  4. Step 4: Simplify right side
    28,260.64x = 611,753,738.09
  5. Step 5: Solve for x
    x = 611,753,738.09/28,260.64
  6. Step 6: Final answer
    x = 21,646.85

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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.