Home / 21,549.51-29,726.19-13,578.03

Finding the Fourth Proportional to 21,549.51, 29,726.19 and 13,578.03

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Solution

The fourth proportional to 21,549.51, 29,726.19 and 13,578.03 is: 18,730.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.51 : 29,726.19 = 13,578.03 : x
  2. Step 2: Convert to fraction form
    21,549.51/29,726.19 = 13,578.03/x
  3. Step 3: Cross multiply
    21,549.51x = 29,726.19 × 13,578.03
  4. Step 4: Simplify right side
    21,549.51x = 403,623,099.61
  5. Step 5: Solve for x
    x = 403,623,099.61/21,549.51
  6. Step 6: Final answer
    x = 18,730.04

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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.