Home / 21,424.80-29,565.90-11,993.70

Finding the Fourth Proportional to 21,424.80, 29,565.90 and 11,993.70

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Solution

The fourth proportional to 21,424.80, 29,565.90 and 11,993.70 is: 16,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.80 : 29,565.90 = 11,993.70 : x
  2. Step 2: Convert to fraction form
    21,424.80/29,565.90 = 11,993.70/x
  3. Step 3: Cross multiply
    21,424.80x = 29,565.90 × 11,993.70
  4. Step 4: Simplify right side
    21,424.80x = 354,604,534.83
  5. Step 5: Solve for x
    x = 354,604,534.83/21,424.80
  6. Step 6: Final answer
    x = 16,551.12

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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.