Home / 15,726.82-21,705.12-14,398.14

Finding the Fourth Proportional to 15,726.82, 21,705.12 and 14,398.14

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Solution

The fourth proportional to 15,726.82, 21,705.12 and 14,398.14 is: 19,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.82 : 21,705.12 = 14,398.14 : x
  2. Step 2: Convert to fraction form
    15,726.82/21,705.12 = 14,398.14/x
  3. Step 3: Cross multiply
    15,726.82x = 21,705.12 × 14,398.14
  4. Step 4: Simplify right side
    15,726.82x = 312,513,356.48
  5. Step 5: Solve for x
    x = 312,513,356.48/15,726.82
  6. Step 6: Final answer
    x = 19,871.36

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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.