Home / 20,125.04-27,755.50-12,956.20

Finding the Fourth Proportional to 20,125.04, 27,755.50 and 12,956.20

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Solution

The fourth proportional to 20,125.04, 27,755.50 and 12,956.20 is: 17,868.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.04 : 27,755.50 = 12,956.20 : x
  2. Step 2: Convert to fraction form
    20,125.04/27,755.50 = 12,956.20/x
  3. Step 3: Cross multiply
    20,125.04x = 27,755.50 × 12,956.20
  4. Step 4: Simplify right side
    20,125.04x = 359,605,809.10
  5. Step 5: Solve for x
    x = 359,605,809.10/20,125.04
  6. Step 6: Final answer
    x = 17,868.58

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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.