Home / 28,471.66-39,291.19-15,725.17

Finding the Fourth Proportional to 28,471.66, 39,291.19 and 15,725.17

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Solution

The fourth proportional to 28,471.66, 39,291.19 and 15,725.17 is: 21,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.66 : 39,291.19 = 15,725.17 : x
  2. Step 2: Convert to fraction form
    28,471.66/39,291.19 = 15,725.17/x
  3. Step 3: Cross multiply
    28,471.66x = 39,291.19 × 15,725.17
  4. Step 4: Simplify right side
    28,471.66x = 617,860,406.48
  5. Step 5: Solve for x
    x = 617,860,406.48/28,471.66
  6. Step 6: Final answer
    x = 21,700.89

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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.