Home / 21,474.68-29,636.04-12,520.76

Finding the Fourth Proportional to 21,474.68, 29,636.04 and 12,520.76

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Solution

The fourth proportional to 21,474.68, 29,636.04 and 12,520.76 is: 17,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.68 : 29,636.04 = 12,520.76 : x
  2. Step 2: Convert to fraction form
    21,474.68/29,636.04 = 12,520.76/x
  3. Step 3: Cross multiply
    21,474.68x = 29,636.04 × 12,520.76
  4. Step 4: Simplify right side
    21,474.68x = 371,065,744.19
  5. Step 5: Solve for x
    x = 371,065,744.19/21,474.68
  6. Step 6: Final answer
    x = 17,279.22

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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.