Home / 21,726.19-29,969.61-12,772.04

Finding the Fourth Proportional to 21,726.19, 29,969.61 and 12,772.04

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Solution

The fourth proportional to 21,726.19, 29,969.61 and 12,772.04 is: 17,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.19 : 29,969.61 = 12,772.04 : x
  2. Step 2: Convert to fraction form
    21,726.19/29,969.61 = 12,772.04/x
  3. Step 3: Cross multiply
    21,726.19x = 29,969.61 × 12,772.04
  4. Step 4: Simplify right side
    21,726.19x = 382,773,057.70
  5. Step 5: Solve for x
    x = 382,773,057.70/21,726.19
  6. Step 6: Final answer
    x = 17,618.05

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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.