Home / 21,152.97-29,191.02-11,721.53

Finding the Fourth Proportional to 21,152.97, 29,191.02 and 11,721.53

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Solution

The fourth proportional to 21,152.97, 29,191.02 and 11,721.53 is: 16,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.97 : 29,191.02 = 11,721.53 : x
  2. Step 2: Convert to fraction form
    21,152.97/29,191.02 = 11,721.53/x
  3. Step 3: Cross multiply
    21,152.97x = 29,191.02 × 11,721.53
  4. Step 4: Simplify right side
    21,152.97x = 342,163,270.71
  5. Step 5: Solve for x
    x = 342,163,270.71/21,152.97
  6. Step 6: Final answer
    x = 16,175.66

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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.