Home / 28,471.14-39,289.98-15,725.16

Finding the Fourth Proportional to 28,471.14, 39,289.98 and 15,725.16

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Solution

The fourth proportional to 28,471.14, 39,289.98 and 15,725.16 is: 21,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.14 : 39,289.98 = 15,725.16 : x
  2. Step 2: Convert to fraction form
    28,471.14/39,289.98 = 15,725.16/x
  3. Step 3: Cross multiply
    28,471.14x = 39,289.98 × 15,725.16
  4. Step 4: Simplify right side
    28,471.14x = 617,841,182.58
  5. Step 5: Solve for x
    x = 617,841,182.58/28,471.14
  6. Step 6: Final answer
    x = 21,700.61

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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.