Home / 21,177.80-29,225.76-11,618.18

Finding the Fourth Proportional to 21,177.80, 29,225.76 and 11,618.18

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Solution

The fourth proportional to 21,177.80, 29,225.76 and 11,618.18 is: 16,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.80 : 29,225.76 = 11,618.18 : x
  2. Step 2: Convert to fraction form
    21,177.80/29,225.76 = 11,618.18/x
  3. Step 3: Cross multiply
    21,177.80x = 29,225.76 × 11,618.18
  4. Step 4: Simplify right side
    21,177.80x = 339,550,142.16
  5. Step 5: Solve for x
    x = 339,550,142.16/21,177.80
  6. Step 6: Final answer
    x = 16,033.30

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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.