Home / 15,168.03-20,930.13-9,117.60

Finding the Fourth Proportional to 15,168.03, 20,930.13 and 9,117.60

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Solution

The fourth proportional to 15,168.03, 20,930.13 and 9,117.60 is: 12,581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.03 : 20,930.13 = 9,117.60 : x
  2. Step 2: Convert to fraction form
    15,168.03/20,930.13 = 9,117.60/x
  3. Step 3: Cross multiply
    15,168.03x = 20,930.13 × 9,117.60
  4. Step 4: Simplify right side
    15,168.03x = 190,832,553.29
  5. Step 5: Solve for x
    x = 190,832,553.29/15,168.03
  6. Step 6: Final answer
    x = 12,581.24

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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.