Home / 13,243.59-18,276.21-7,275.12

Finding the Fourth Proportional to 13,243.59, 18,276.21 and 7,275.12

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Solution

The fourth proportional to 13,243.59, 18,276.21 and 7,275.12 is: 10,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.59 : 18,276.21 = 7,275.12 : x
  2. Step 2: Convert to fraction form
    13,243.59/18,276.21 = 7,275.12/x
  3. Step 3: Cross multiply
    13,243.59x = 18,276.21 × 7,275.12
  4. Step 4: Simplify right side
    13,243.59x = 132,961,620.90
  5. Step 5: Solve for x
    x = 132,961,620.90/13,243.59
  6. Step 6: Final answer
    x = 10,039.70

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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.