Home / 15,391.80-21,235.69-9,417.24

Finding the Fourth Proportional to 15,391.80, 21,235.69 and 9,417.24

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Solution

The fourth proportional to 15,391.80, 21,235.69 and 9,417.24 is: 12,992.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.80 : 21,235.69 = 9,417.24 : x
  2. Step 2: Convert to fraction form
    15,391.80/21,235.69 = 9,417.24/x
  3. Step 3: Cross multiply
    15,391.80x = 21,235.69 × 9,417.24
  4. Step 4: Simplify right side
    15,391.80x = 199,981,589.30
  5. Step 5: Solve for x
    x = 199,981,589.30/15,391.80
  6. Step 6: Final answer
    x = 12,992.74

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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.