Home / 53,138.25-79,712.03-13,695.30

Finding the Fourth Proportional to 53,138.25, 79,712.03 and 13,695.30

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Solution

The fourth proportional to 53,138.25, 79,712.03 and 13,695.30 is: 20,544.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.25 : 79,712.03 = 13,695.30 : x
  2. Step 2: Convert to fraction form
    53,138.25/79,712.03 = 13,695.30/x
  3. Step 3: Cross multiply
    53,138.25x = 79,712.03 × 13,695.30
  4. Step 4: Simplify right side
    53,138.25x = 1,091,680,164.46
  5. Step 5: Solve for x
    x = 1,091,680,164.46/53,138.25
  6. Step 6: Final answer
    x = 20,544.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.