Home / 28,397.31-39,188.55-15,650.96

Finding the Fourth Proportional to 28,397.31, 39,188.55 and 15,650.96

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Solution

The fourth proportional to 28,397.31, 39,188.55 and 15,650.96 is: 21,598.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.31 : 39,188.55 = 15,650.96 : x
  2. Step 2: Convert to fraction form
    28,397.31/39,188.55 = 15,650.96/x
  3. Step 3: Cross multiply
    28,397.31x = 39,188.55 × 15,650.96
  4. Step 4: Simplify right side
    28,397.31x = 613,338,232.57
  5. Step 5: Solve for x
    x = 613,338,232.57/28,397.31
  6. Step 6: Final answer
    x = 21,598.46

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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.