Home / 21,427.40-29,577.25-14,713.31

Finding the Fourth Proportional to 21,427.40, 29,577.25 and 14,713.31

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Solution

The fourth proportional to 21,427.40, 29,577.25 and 14,713.31 is: 20,309.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.40 : 29,577.25 = 14,713.31 : x
  2. Step 2: Convert to fraction form
    21,427.40/29,577.25 = 14,713.31/x
  3. Step 3: Cross multiply
    21,427.40x = 29,577.25 × 14,713.31
  4. Step 4: Simplify right side
    21,427.40x = 435,179,340.53
  5. Step 5: Solve for x
    x = 435,179,340.53/21,427.40
  6. Step 6: Final answer
    x = 20,309.48

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Half scale
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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.