Home / 15,821.24-21,832.65-9,107.10

Finding the Fourth Proportional to 15,821.24, 21,832.65 and 9,107.10

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Solution

The fourth proportional to 15,821.24, 21,832.65 and 9,107.10 is: 12,567.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.24 : 21,832.65 = 9,107.10 : x
  2. Step 2: Convert to fraction form
    15,821.24/21,832.65 = 9,107.10/x
  3. Step 3: Cross multiply
    15,821.24x = 21,832.65 × 9,107.10
  4. Step 4: Simplify right side
    15,821.24x = 198,832,126.82
  5. Step 5: Solve for x
    x = 198,832,126.82/15,821.24
  6. Step 6: Final answer
    x = 12,567.42

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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.