Home / 31,200.04-43,042.35-18,617.50

Finding the Fourth Proportional to 31,200.04, 43,042.35 and 18,617.50

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Solution

The fourth proportional to 31,200.04, 43,042.35 and 18,617.50 is: 25,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,200.04 : 43,042.35 = 18,617.50 : x
  2. Step 2: Convert to fraction form
    31,200.04/43,042.35 = 18,617.50/x
  3. Step 3: Cross multiply
    31,200.04x = 43,042.35 × 18,617.50
  4. Step 4: Simplify right side
    31,200.04x = 801,340,951.13
  5. Step 5: Solve for x
    x = 801,340,951.13/31,200.04
  6. Step 6: Final answer
    x = 25,683.97

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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.