Home / 21,255.24-29,332.14-11,823.78

Finding the Fourth Proportional to 21,255.24, 29,332.14 and 11,823.78

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Solution

The fourth proportional to 21,255.24, 29,332.14 and 11,823.78 is: 16,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.24 : 29,332.14 = 11,823.78 : x
  2. Step 2: Convert to fraction form
    21,255.24/29,332.14 = 11,823.78/x
  3. Step 3: Cross multiply
    21,255.24x = 29,332.14 × 11,823.78
  4. Step 4: Simplify right side
    21,255.24x = 346,816,770.29
  5. Step 5: Solve for x
    x = 346,816,770.29/21,255.24
  6. Step 6: Final answer
    x = 16,316.77

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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.