Home / 30,711.42-42,381.36-17,282.70

Finding the Fourth Proportional to 30,711.42, 42,381.36 and 17,282.70

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Solution

The fourth proportional to 30,711.42, 42,381.36 and 17,282.70 is: 23,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.42 : 42,381.36 = 17,282.70 : x
  2. Step 2: Convert to fraction form
    30,711.42/42,381.36 = 17,282.70/x
  3. Step 3: Cross multiply
    30,711.42x = 42,381.36 × 17,282.70
  4. Step 4: Simplify right side
    30,711.42x = 732,464,330.47
  5. Step 5: Solve for x
    x = 732,464,330.47/30,711.42
  6. Step 6: Final answer
    x = 23,849.90

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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.