Home / 21,222.96-29,275.11-14,505.18

Finding the Fourth Proportional to 21,222.96, 29,275.11 and 14,505.18

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Solution

The fourth proportional to 21,222.96, 29,275.11 and 14,505.18 is: 20,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.96 : 29,275.11 = 14,505.18 : x
  2. Step 2: Convert to fraction form
    21,222.96/29,275.11 = 14,505.18/x
  3. Step 3: Cross multiply
    21,222.96x = 29,275.11 × 14,505.18
  4. Step 4: Simplify right side
    21,222.96x = 424,640,740.07
  5. Step 5: Solve for x
    x = 424,640,740.07/21,222.96
  6. Step 6: Final answer
    x = 20,008.55

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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.