Home / 13,488.72-20,231.16-4,254.48

Finding the Fourth Proportional to 13,488.72, 20,231.16 and 4,254.48

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Solution

The fourth proportional to 13,488.72, 20,231.16 and 4,254.48 is: 6,381.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.72 : 20,231.16 = 4,254.48 : x
  2. Step 2: Convert to fraction form
    13,488.72/20,231.16 = 4,254.48/x
  3. Step 3: Cross multiply
    13,488.72x = 20,231.16 × 4,254.48
  4. Step 4: Simplify right side
    13,488.72x = 86,073,065.60
  5. Step 5: Solve for x
    x = 86,073,065.60/13,488.72
  6. Step 6: Final answer
    x = 6,381.11

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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.