Home / 13,339.28-18,407.28-7,370.90

Finding the Fourth Proportional to 13,339.28, 18,407.28 and 7,370.90

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Solution

The fourth proportional to 13,339.28, 18,407.28 and 7,370.90 is: 10,171.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.28 : 18,407.28 = 7,370.90 : x
  2. Step 2: Convert to fraction form
    13,339.28/18,407.28 = 7,370.90/x
  3. Step 3: Cross multiply
    13,339.28x = 18,407.28 × 7,370.90
  4. Step 4: Simplify right side
    13,339.28x = 135,678,224.78
  5. Step 5: Solve for x
    x = 135,678,224.78/13,339.28
  6. Step 6: Final answer
    x = 10,171.33

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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.