Home / 15,845.30-21,864.06-9,131.24

Finding the Fourth Proportional to 15,845.30, 21,864.06 and 9,131.24

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Solution

The fourth proportional to 15,845.30, 21,864.06 and 9,131.24 is: 12,599.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.30 : 21,864.06 = 9,131.24 : x
  2. Step 2: Convert to fraction form
    15,845.30/21,864.06 = 9,131.24/x
  3. Step 3: Cross multiply
    15,845.30x = 21,864.06 × 9,131.24
  4. Step 4: Simplify right side
    15,845.30x = 199,645,979.23
  5. Step 5: Solve for x
    x = 199,645,979.23/15,845.30
  6. Step 6: Final answer
    x = 12,599.70

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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.