Home / 28,505.57-39,337.74-15,930.32

Finding the Fourth Proportional to 28,505.57, 39,337.74 and 15,930.32

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Solution

The fourth proportional to 28,505.57, 39,337.74 and 15,930.32 is: 21,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.57 : 39,337.74 = 15,930.32 : x
  2. Step 2: Convert to fraction form
    28,505.57/39,337.74 = 15,930.32/x
  3. Step 3: Cross multiply
    28,505.57x = 39,337.74 × 15,930.32
  4. Step 4: Simplify right side
    28,505.57x = 626,662,589.59
  5. Step 5: Solve for x
    x = 626,662,589.59/28,505.57
  6. Step 6: Final answer
    x = 21,983.87

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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.