Home / 22,421.66-30,909.57-15,686.42

Finding the Fourth Proportional to 22,421.66, 30,909.57 and 15,686.42

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Solution

The fourth proportional to 22,421.66, 30,909.57 and 15,686.42 is: 21,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.66 : 30,909.57 = 15,686.42 : x
  2. Step 2: Convert to fraction form
    22,421.66/30,909.57 = 15,686.42/x
  3. Step 3: Cross multiply
    22,421.66x = 30,909.57 × 15,686.42
  4. Step 4: Simplify right side
    22,421.66x = 484,860,497.04
  5. Step 5: Solve for x
    x = 484,860,497.04/22,421.66
  6. Step 6: Final answer
    x = 21,624.65

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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.