Home / 13,352.68-18,431.08-9,374.78

Finding the Fourth Proportional to 13,352.68, 18,431.08 and 9,374.78

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Solution

The fourth proportional to 13,352.68, 18,431.08 and 9,374.78 is: 12,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.68 : 18,431.08 = 9,374.78 : x
  2. Step 2: Convert to fraction form
    13,352.68/18,431.08 = 9,374.78/x
  3. Step 3: Cross multiply
    13,352.68x = 18,431.08 × 9,374.78
  4. Step 4: Simplify right side
    13,352.68x = 172,787,320.16
  5. Step 5: Solve for x
    x = 172,787,320.16/13,352.68
  6. Step 6: Final answer
    x = 12,940.27

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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.