Home / 28,487.92-39,314.13-15,741.93

Finding the Fourth Proportional to 28,487.92, 39,314.13 and 15,741.93

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Solution

The fourth proportional to 28,487.92, 39,314.13 and 15,741.93 is: 21,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.92 : 39,314.13 = 15,741.93 : x
  2. Step 2: Convert to fraction form
    28,487.92/39,314.13 = 15,741.93/x
  3. Step 3: Cross multiply
    28,487.92x = 39,314.13 × 15,741.93
  4. Step 4: Simplify right side
    28,487.92x = 618,880,282.47
  5. Step 5: Solve for x
    x = 618,880,282.47/28,487.92
  6. Step 6: Final answer
    x = 21,724.31

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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.