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Finding the Fourth Proportional to 13,795.20, 19,040.04 and 9,079.20

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Solution

The fourth proportional to 13,795.20, 19,040.04 and 9,079.20 is: 12,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,795.20 : 19,040.04 = 9,079.20 : x
  2. Step 2: Convert to fraction form
    13,795.20/19,040.04 = 9,079.20/x
  3. Step 3: Cross multiply
    13,795.20x = 19,040.04 × 9,079.20
  4. Step 4: Simplify right side
    13,795.20x = 172,868,331.17
  5. Step 5: Solve for x
    x = 172,868,331.17/13,795.20
  6. Step 6: Final answer
    x = 12,531.05

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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.