Home / 31,001.93-42,782.46-16,854.78

Finding the Fourth Proportional to 31,001.93, 42,782.46 and 16,854.78

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Solution

The fourth proportional to 31,001.93, 42,782.46 and 16,854.78 is: 23,259.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.93 : 42,782.46 = 16,854.78 : x
  2. Step 2: Convert to fraction form
    31,001.93/42,782.46 = 16,854.78/x
  3. Step 3: Cross multiply
    31,001.93x = 42,782.46 × 16,854.78
  4. Step 4: Simplify right side
    31,001.93x = 721,088,727.52
  5. Step 5: Solve for x
    x = 721,088,727.52/31,001.93
  6. Step 6: Final answer
    x = 23,259.48

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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.