Home / 31,008.81-42,793.07-16,862.57

Finding the Fourth Proportional to 31,008.81, 42,793.07 and 16,862.57

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Solution

The fourth proportional to 31,008.81, 42,793.07 and 16,862.57 is: 23,270.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.81 : 42,793.07 = 16,862.57 : x
  2. Step 2: Convert to fraction form
    31,008.81/42,793.07 = 16,862.57/x
  3. Step 3: Cross multiply
    31,008.81x = 42,793.07 × 16,862.57
  4. Step 4: Simplify right side
    31,008.81x = 721,601,138.39
  5. Step 5: Solve for x
    x = 721,601,138.39/31,008.81
  6. Step 6: Final answer
    x = 23,270.84

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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.