Home / 22,117.16-30,521.40-12,685.52

Finding the Fourth Proportional to 22,117.16, 30,521.40 and 12,685.52

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Solution

The fourth proportional to 22,117.16, 30,521.40 and 12,685.52 is: 17,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,117.16 : 30,521.40 = 12,685.52 : x
  2. Step 2: Convert to fraction form
    22,117.16/30,521.40 = 12,685.52/x
  3. Step 3: Cross multiply
    22,117.16x = 30,521.40 × 12,685.52
  4. Step 4: Simplify right side
    22,117.16x = 387,179,830.13
  5. Step 5: Solve for x
    x = 387,179,830.13/22,117.16
  6. Step 6: Final answer
    x = 17,505.86

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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.