Home / 15,823.25-21,836.13-9,108.75

Finding the Fourth Proportional to 15,823.25, 21,836.13 and 9,108.75

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Solution

The fourth proportional to 15,823.25, 21,836.13 and 9,108.75 is: 12,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.25 : 21,836.13 = 9,108.75 : x
  2. Step 2: Convert to fraction form
    15,823.25/21,836.13 = 9,108.75/x
  3. Step 3: Cross multiply
    15,823.25x = 21,836.13 × 9,108.75
  4. Step 4: Simplify right side
    15,823.25x = 198,899,849.14
  5. Step 5: Solve for x
    x = 198,899,849.14/15,823.25
  6. Step 6: Final answer
    x = 12,570.10

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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.