Home / 21,531.54-29,713.54-12,458.18

Finding the Fourth Proportional to 21,531.54, 29,713.54 and 12,458.18

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Solution

The fourth proportional to 21,531.54, 29,713.54 and 12,458.18 is: 17,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.54 : 29,713.54 = 12,458.18 : x
  2. Step 2: Convert to fraction form
    21,531.54/29,713.54 = 12,458.18/x
  3. Step 3: Cross multiply
    21,531.54x = 29,713.54 × 12,458.18
  4. Step 4: Simplify right side
    21,531.54x = 370,176,629.76
  5. Step 5: Solve for x
    x = 370,176,629.76/21,531.54
  6. Step 6: Final answer
    x = 17,192.30

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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.