Home / 31,387.50-43,298.66-20,045.06

Finding the Fourth Proportional to 31,387.50, 43,298.66 and 20,045.06

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Solution

The fourth proportional to 31,387.50, 43,298.66 and 20,045.06 is: 27,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.50 : 43,298.66 = 20,045.06 : x
  2. Step 2: Convert to fraction form
    31,387.50/43,298.66 = 20,045.06/x
  3. Step 3: Cross multiply
    31,387.50x = 43,298.66 × 20,045.06
  4. Step 4: Simplify right side
    31,387.50x = 867,924,237.62
  5. Step 5: Solve for x
    x = 867,924,237.62/31,387.50
  6. Step 6: Final answer
    x = 27,651.91

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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.