Home / 13,139.52-18,132.57-7,550.52

Finding the Fourth Proportional to 13,139.52, 18,132.57 and 7,550.52

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Solution

The fourth proportional to 13,139.52, 18,132.57 and 7,550.52 is: 10,419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.52 : 18,132.57 = 7,550.52 : x
  2. Step 2: Convert to fraction form
    13,139.52/18,132.57 = 7,550.52/x
  3. Step 3: Cross multiply
    13,139.52x = 18,132.57 × 7,550.52
  4. Step 4: Simplify right side
    13,139.52x = 136,910,332.44
  5. Step 5: Solve for x
    x = 136,910,332.44/13,139.52
  6. Step 6: Final answer
    x = 10,419.74

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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.