Home / 15,527.04-21,407.28-12,691.44

Finding the Fourth Proportional to 15,527.04, 21,407.28 and 12,691.44

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Solution

The fourth proportional to 15,527.04, 21,407.28 and 12,691.44 is: 17,497.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.04 : 21,407.28 = 12,691.44 : x
  2. Step 2: Convert to fraction form
    15,527.04/21,407.28 = 12,691.44/x
  3. Step 3: Cross multiply
    15,527.04x = 21,407.28 × 12,691.44
  4. Step 4: Simplify right side
    15,527.04x = 271,689,209.68
  5. Step 5: Solve for x
    x = 271,689,209.68/15,527.04
  6. Step 6: Final answer
    x = 17,497.81

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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.