Home / 13,572.40-20,358.78-3,712.48

Finding the Fourth Proportional to 13,572.40, 20,358.78 and 3,712.48

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Solution

The fourth proportional to 13,572.40, 20,358.78 and 3,712.48 is: 5,568.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.40 : 20,358.78 = 3,712.48 : x
  2. Step 2: Convert to fraction form
    13,572.40/20,358.78 = 3,712.48/x
  3. Step 3: Cross multiply
    13,572.40x = 20,358.78 × 3,712.48
  4. Step 4: Simplify right side
    13,572.40x = 75,581,563.57
  5. Step 5: Solve for x
    x = 75,581,563.57/13,572.40
  6. Step 6: Final answer
    x = 5,568.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.