Home / 21,395.27-29,523.49-12,442.65

Finding the Fourth Proportional to 21,395.27, 29,523.49 and 12,442.65

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Solution

The fourth proportional to 21,395.27, 29,523.49 and 12,442.65 is: 17,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.27 : 29,523.49 = 12,442.65 : x
  2. Step 2: Convert to fraction form
    21,395.27/29,523.49 = 12,442.65/x
  3. Step 3: Cross multiply
    21,395.27x = 29,523.49 × 12,442.65
  4. Step 4: Simplify right side
    21,395.27x = 367,350,311.03
  5. Step 5: Solve for x
    x = 367,350,311.03/21,395.27
  6. Step 6: Final answer
    x = 17,169.70

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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.