Home / 21,223.12-29,288.69-12,726.62

Finding the Fourth Proportional to 21,223.12, 29,288.69 and 12,726.62

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Solution

The fourth proportional to 21,223.12, 29,288.69 and 12,726.62 is: 17,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.12 : 29,288.69 = 12,726.62 : x
  2. Step 2: Convert to fraction form
    21,223.12/29,288.69 = 12,726.62/x
  3. Step 3: Cross multiply
    21,223.12x = 29,288.69 × 12,726.62
  4. Step 4: Simplify right side
    21,223.12x = 372,746,132.97
  5. Step 5: Solve for x
    x = 372,746,132.97/21,223.12
  6. Step 6: Final answer
    x = 17,563.21

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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.