Home / 28,363.39-39,139.95-15,614.09

Finding the Fourth Proportional to 28,363.39, 39,139.95 and 15,614.09

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Solution

The fourth proportional to 28,363.39, 39,139.95 and 15,614.09 is: 21,546.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.39 : 39,139.95 = 15,614.09 : x
  2. Step 2: Convert to fraction form
    28,363.39/39,139.95 = 15,614.09/x
  3. Step 3: Cross multiply
    28,363.39x = 39,139.95 × 15,614.09
  4. Step 4: Simplify right side
    28,363.39x = 611,134,701.90
  5. Step 5: Solve for x
    x = 611,134,701.90/28,363.39
  6. Step 6: Final answer
    x = 21,546.61

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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.