Home / 15,726.90-21,699.26-9,982.26

Finding the Fourth Proportional to 15,726.90, 21,699.26 and 9,982.26

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Solution

The fourth proportional to 15,726.90, 21,699.26 and 9,982.26 is: 13,773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.90 : 21,699.26 = 9,982.26 : x
  2. Step 2: Convert to fraction form
    15,726.90/21,699.26 = 9,982.26/x
  3. Step 3: Cross multiply
    15,726.90x = 21,699.26 × 9,982.26
  4. Step 4: Simplify right side
    15,726.90x = 216,607,655.13
  5. Step 5: Solve for x
    x = 216,607,655.13/15,726.90
  6. Step 6: Final answer
    x = 13,773.07

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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.