Home / 13,358.25-18,432.90-7,390.04

Finding the Fourth Proportional to 13,358.25, 18,432.90 and 7,390.04

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Solution

The fourth proportional to 13,358.25, 18,432.90 and 7,390.04 is: 10,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.25 : 18,432.90 = 7,390.04 : x
  2. Step 2: Convert to fraction form
    13,358.25/18,432.90 = 7,390.04/x
  3. Step 3: Cross multiply
    13,358.25x = 18,432.90 × 7,390.04
  4. Step 4: Simplify right side
    13,358.25x = 136,219,776.15
  5. Step 5: Solve for x
    x = 136,219,776.15/13,358.25
  6. Step 6: Final answer
    x = 10,197.43

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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.