Home / 13,572.85-20,329.19-10,429.72

Finding the Fourth Proportional to 13,572.85, 20,329.19 and 10,429.72

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Solution

The fourth proportional to 13,572.85, 20,329.19 and 10,429.72 is: 15,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.85 : 20,329.19 = 10,429.72 : x
  2. Step 2: Convert to fraction form
    13,572.85/20,329.19 = 10,429.72/x
  3. Step 3: Cross multiply
    13,572.85x = 20,329.19 × 10,429.72
  4. Step 4: Simplify right side
    13,572.85x = 212,027,759.53
  5. Step 5: Solve for x
    x = 212,027,759.53/13,572.85
  6. Step 6: Final answer
    x = 15,621.46

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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.