Home / 31,089.28-42,902.12-16,941.84

Finding the Fourth Proportional to 31,089.28, 42,902.12 and 16,941.84

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Solution

The fourth proportional to 31,089.28, 42,902.12 and 16,941.84 is: 23,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,089.28 : 42,902.12 = 16,941.84 : x
  2. Step 2: Convert to fraction form
    31,089.28/42,902.12 = 16,941.84/x
  3. Step 3: Cross multiply
    31,089.28x = 42,902.12 × 16,941.84
  4. Step 4: Simplify right side
    31,089.28x = 726,840,852.70
  5. Step 5: Solve for x
    x = 726,840,852.70/31,089.28
  6. Step 6: Final answer
    x = 23,379.15

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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.