Home / 13,137.02-18,129.12-7,471.64

Finding the Fourth Proportional to 13,137.02, 18,129.12 and 7,471.64

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Solution

The fourth proportional to 13,137.02, 18,129.12 and 7,471.64 is: 10,310.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.02 : 18,129.12 = 7,471.64 : x
  2. Step 2: Convert to fraction form
    13,137.02/18,129.12 = 7,471.64/x
  3. Step 3: Cross multiply
    13,137.02x = 18,129.12 × 7,471.64
  4. Step 4: Simplify right side
    13,137.02x = 135,454,275.46
  5. Step 5: Solve for x
    x = 135,454,275.46/13,137.02
  6. Step 6: Final answer
    x = 10,310.88

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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.