Home / 21,153.04-29,191.44-11,721.76

Finding the Fourth Proportional to 21,153.04, 29,191.44 and 11,721.76

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Solution

The fourth proportional to 21,153.04, 29,191.44 and 11,721.76 is: 16,176.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.04 : 29,191.44 = 11,721.76 : x
  2. Step 2: Convert to fraction form
    21,153.04/29,191.44 = 11,721.76/x
  3. Step 3: Cross multiply
    21,153.04x = 29,191.44 × 11,721.76
  4. Step 4: Simplify right side
    21,153.04x = 342,175,053.73
  5. Step 5: Solve for x
    x = 342,175,053.73/21,153.04
  6. Step 6: Final answer
    x = 16,176.16

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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.