Home / 15,155.16-22,823.97-13,422

Finding the Fourth Proportional to 15,155.16, 22,823.97 and 13,422

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Solution

The fourth proportional to 15,155.16, 22,823.97 and 13,422 is: 20,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.16 : 22,823.97 = 13,422 : x
  2. Step 2: Convert to fraction form
    15,155.16/22,823.97 = 13,422/x
  3. Step 3: Cross multiply
    15,155.16x = 22,823.97 × 13,422
  4. Step 4: Simplify right side
    15,155.16x = 306,343,325.34
  5. Step 5: Solve for x
    x = 306,343,325.34/15,155.16
  6. Step 6: Final answer
    x = 20,213.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.