Home / 21,153.13-29,192.61-12,200.47

Finding the Fourth Proportional to 21,153.13, 29,192.61 and 12,200.47

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Solution

The fourth proportional to 21,153.13, 29,192.61 and 12,200.47 is: 16,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.13 : 29,192.61 = 12,200.47 : x
  2. Step 2: Convert to fraction form
    21,153.13/29,192.61 = 12,200.47/x
  3. Step 3: Cross multiply
    21,153.13x = 29,192.61 × 12,200.47
  4. Step 4: Simplify right side
    21,153.13x = 356,163,562.53
  5. Step 5: Solve for x
    x = 356,163,562.53/21,153.13
  6. Step 6: Final answer
    x = 16,837.39

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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.