Home / 22,764.32-31,396.56-15,689.12

Finding the Fourth Proportional to 22,764.32, 31,396.56 and 15,689.12

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Solution

The fourth proportional to 22,764.32, 31,396.56 and 15,689.12 is: 21,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,764.32 : 31,396.56 = 15,689.12 : x
  2. Step 2: Convert to fraction form
    22,764.32/31,396.56 = 15,689.12/x
  3. Step 3: Cross multiply
    22,764.32x = 31,396.56 × 15,689.12
  4. Step 4: Simplify right side
    22,764.32x = 492,584,397.43
  5. Step 5: Solve for x
    x = 492,584,397.43/22,764.32
  6. Step 6: Final answer
    x = 21,638.44

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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.