Home / 22,421.16-30,908.88-15,685.92

Finding the Fourth Proportional to 22,421.16, 30,908.88 and 15,685.92

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Solution

The fourth proportional to 22,421.16, 30,908.88 and 15,685.92 is: 21,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.16 : 30,908.88 = 15,685.92 : x
  2. Step 2: Convert to fraction form
    22,421.16/30,908.88 = 15,685.92/x
  3. Step 3: Cross multiply
    22,421.16x = 30,908.88 × 15,685.92
  4. Step 4: Simplify right side
    22,421.16x = 484,834,218.97
  5. Step 5: Solve for x
    x = 484,834,218.97/22,421.16
  6. Step 6: Final answer
    x = 21,623.96

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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.