Home / 13,356.29-18,431.35-7,387.83

Finding the Fourth Proportional to 13,356.29, 18,431.35 and 7,387.83

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Solution

The fourth proportional to 13,356.29, 18,431.35 and 7,387.83 is: 10,195.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.29 : 18,431.35 = 7,387.83 : x
  2. Step 2: Convert to fraction form
    13,356.29/18,431.35 = 7,387.83/x
  3. Step 3: Cross multiply
    13,356.29x = 18,431.35 × 7,387.83
  4. Step 4: Simplify right side
    13,356.29x = 136,167,680.47
  5. Step 5: Solve for x
    x = 136,167,680.47/13,356.29
  6. Step 6: Final answer
    x = 10,195.02

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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.