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Finding the Fourth Proportional to 38,138.80, 57,208.20 and 10,058.80

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Solution

The fourth proportional to 38,138.80, 57,208.20 and 10,058.80 is: 15,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.80 : 57,208.20 = 10,058.80 : x
  2. Step 2: Convert to fraction form
    38,138.80/57,208.20 = 10,058.80/x
  3. Step 3: Cross multiply
    38,138.80x = 57,208.20 × 10,058.80
  4. Step 4: Simplify right side
    38,138.80x = 575,445,842.16
  5. Step 5: Solve for x
    x = 575,445,842.16/38,138.80
  6. Step 6: Final answer
    x = 15,088.20

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1.5x scale

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.