Home / 28,331.32-39,098.28-15,756.88

Finding the Fourth Proportional to 28,331.32, 39,098.28 and 15,756.88

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Solution

The fourth proportional to 28,331.32, 39,098.28 and 15,756.88 is: 21,745.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.32 : 39,098.28 = 15,756.88 : x
  2. Step 2: Convert to fraction form
    28,331.32/39,098.28 = 15,756.88/x
  3. Step 3: Cross multiply
    28,331.32x = 39,098.28 × 15,756.88
  4. Step 4: Simplify right side
    28,331.32x = 616,066,906.17
  5. Step 5: Solve for x
    x = 616,066,906.17/28,331.32
  6. Step 6: Final answer
    x = 21,745.08

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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.