Home / 31,011.85-42,796.40-16,864.69

Finding the Fourth Proportional to 31,011.85, 42,796.40 and 16,864.69

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Solution

The fourth proportional to 31,011.85, 42,796.40 and 16,864.69 is: 23,273.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011.85 : 42,796.40 = 16,864.69 : x
  2. Step 2: Convert to fraction form
    31,011.85/42,796.40 = 16,864.69/x
  3. Step 3: Cross multiply
    31,011.85x = 42,796.40 × 16,864.69
  4. Step 4: Simplify right side
    31,011.85x = 721,747,827.80
  5. Step 5: Solve for x
    x = 721,747,827.80/31,011.85
  6. Step 6: Final answer
    x = 23,273.29

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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.