Home / 12,543.80-17,305.65-7,236.68

Finding the Fourth Proportional to 12,543.80, 17,305.65 and 7,236.68

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Solution

The fourth proportional to 12,543.80, 17,305.65 and 7,236.68 is: 9,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.80 : 17,305.65 = 7,236.68 : x
  2. Step 2: Convert to fraction form
    12,543.80/17,305.65 = 7,236.68/x
  3. Step 3: Cross multiply
    12,543.80x = 17,305.65 × 7,236.68
  4. Step 4: Simplify right side
    12,543.80x = 125,235,364.71
  5. Step 5: Solve for x
    x = 125,235,364.71/12,543.80
  6. Step 6: Final answer
    x = 9,983.85

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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.