Home / 21,726.72-29,980.80-17,261.28

Finding the Fourth Proportional to 21,726.72, 29,980.80 and 17,261.28

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Solution

The fourth proportional to 21,726.72, 29,980.80 and 17,261.28 is: 23,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.72 : 29,980.80 = 17,261.28 : x
  2. Step 2: Convert to fraction form
    21,726.72/29,980.80 = 17,261.28/x
  3. Step 3: Cross multiply
    21,726.72x = 29,980.80 × 17,261.28
  4. Step 4: Simplify right side
    21,726.72x = 517,506,983.42
  5. Step 5: Solve for x
    x = 517,506,983.42/21,726.72
  6. Step 6: Final answer
    x = 23,818.92

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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.