Home / 22,456.64-30,989.40-12,385.28

Finding the Fourth Proportional to 22,456.64, 30,989.40 and 12,385.28

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Solution

The fourth proportional to 22,456.64, 30,989.40 and 12,385.28 is: 17,091.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.64 : 30,989.40 = 12,385.28 : x
  2. Step 2: Convert to fraction form
    22,456.64/30,989.40 = 12,385.28/x
  3. Step 3: Cross multiply
    22,456.64x = 30,989.40 × 12,385.28
  4. Step 4: Simplify right side
    22,456.64x = 383,812,396.03
  5. Step 5: Solve for x
    x = 383,812,396.03/22,456.64
  6. Step 6: Final answer
    x = 17,091.27

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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.