Home / 14,452.40-19,961.16-9,729.20

Finding the Fourth Proportional to 14,452.40, 19,961.16 and 9,729.20

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Solution

The fourth proportional to 14,452.40, 19,961.16 and 9,729.20 is: 13,437.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452.40 : 19,961.16 = 9,729.20 : x
  2. Step 2: Convert to fraction form
    14,452.40/19,961.16 = 9,729.20/x
  3. Step 3: Cross multiply
    14,452.40x = 19,961.16 × 9,729.20
  4. Step 4: Simplify right side
    14,452.40x = 194,206,117.87
  5. Step 5: Solve for x
    x = 194,206,117.87/14,452.40
  6. Step 6: Final answer
    x = 13,437.64

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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.