Home / 28,314.61-39,069.86-15,568.31

Finding the Fourth Proportional to 28,314.61, 39,069.86 and 15,568.31

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Solution

The fourth proportional to 28,314.61, 39,069.86 and 15,568.31 is: 21,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.61 : 39,069.86 = 15,568.31 : x
  2. Step 2: Convert to fraction form
    28,314.61/39,069.86 = 15,568.31/x
  3. Step 3: Cross multiply
    28,314.61x = 39,069.86 × 15,568.31
  4. Step 4: Simplify right side
    28,314.61x = 608,251,711.97
  5. Step 5: Solve for x
    x = 608,251,711.97/28,314.61
  6. Step 6: Final answer
    x = 21,481.91

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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.