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Finding the Fourth Proportional to 15,108.67, 20,852.13 and 9,449.20

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Solution

The fourth proportional to 15,108.67, 20,852.13 and 9,449.20 is: 13,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.67 : 20,852.13 = 9,449.20 : x
  2. Step 2: Convert to fraction form
    15,108.67/20,852.13 = 9,449.20/x
  3. Step 3: Cross multiply
    15,108.67x = 20,852.13 × 9,449.20
  4. Step 4: Simplify right side
    15,108.67x = 197,035,946.80
  5. Step 5: Solve for x
    x = 197,035,946.80/15,108.67
  6. Step 6: Final answer
    x = 13,041.25

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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.