Home / 20,941.12-28,898.85-11,381.08

Finding the Fourth Proportional to 20,941.12, 28,898.85 and 11,381.08

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Solution

The fourth proportional to 20,941.12, 28,898.85 and 11,381.08 is: 15,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.12 : 28,898.85 = 11,381.08 : x
  2. Step 2: Convert to fraction form
    20,941.12/28,898.85 = 11,381.08/x
  3. Step 3: Cross multiply
    20,941.12x = 28,898.85 × 11,381.08
  4. Step 4: Simplify right side
    20,941.12x = 328,900,123.76
  5. Step 5: Solve for x
    x = 328,900,123.76/20,941.12
  6. Step 6: Final answer
    x = 15,705.95

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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.