Home / 21,282.76-29,369.07-12,207.66

Finding the Fourth Proportional to 21,282.76, 29,369.07 and 12,207.66

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Solution

The fourth proportional to 21,282.76, 29,369.07 and 12,207.66 is: 16,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.76 : 29,369.07 = 12,207.66 : x
  2. Step 2: Convert to fraction form
    21,282.76/29,369.07 = 12,207.66/x
  3. Step 3: Cross multiply
    21,282.76x = 29,369.07 × 12,207.66
  4. Step 4: Simplify right side
    21,282.76x = 358,527,621.08
  5. Step 5: Solve for x
    x = 358,527,621.08/21,282.76
  6. Step 6: Final answer
    x = 16,845.92

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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.