Home / 20,748.85-31,154.30-11,874.17

Finding the Fourth Proportional to 20,748.85, 31,154.30 and 11,874.17

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Solution

The fourth proportional to 20,748.85, 31,154.30 and 11,874.17 is: 17,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.85 : 31,154.30 = 11,874.17 : x
  2. Step 2: Convert to fraction form
    20,748.85/31,154.30 = 11,874.17/x
  3. Step 3: Cross multiply
    20,748.85x = 31,154.30 × 11,874.17
  4. Step 4: Simplify right side
    20,748.85x = 369,931,454.43
  5. Step 5: Solve for x
    x = 369,931,454.43/20,748.85
  6. Step 6: Final answer
    x = 17,829.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.