Home / 13,309.92-18,358.20-9,331.92

Finding the Fourth Proportional to 13,309.92, 18,358.20 and 9,331.92

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Solution

The fourth proportional to 13,309.92, 18,358.20 and 9,331.92 is: 12,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.92 : 18,358.20 = 9,331.92 : x
  2. Step 2: Convert to fraction form
    13,309.92/18,358.20 = 9,331.92/x
  3. Step 3: Cross multiply
    13,309.92x = 18,358.20 × 9,331.92
  4. Step 4: Simplify right side
    13,309.92x = 171,317,253.74
  5. Step 5: Solve for x
    x = 171,317,253.74/13,309.92
  6. Step 6: Final answer
    x = 12,871.40

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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.