Home / 38,765.66-58,139.40-12,470.72

Finding the Fourth Proportional to 38,765.66, 58,139.40 and 12,470.72

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Solution

The fourth proportional to 38,765.66, 58,139.40 and 12,470.72 is: 18,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,765.66 : 58,139.40 = 12,470.72 : x
  2. Step 2: Convert to fraction form
    38,765.66/58,139.40 = 12,470.72/x
  3. Step 3: Cross multiply
    38,765.66x = 58,139.40 × 12,470.72
  4. Step 4: Simplify right side
    38,765.66x = 725,040,178.37
  5. Step 5: Solve for x
    x = 725,040,178.37/38,765.66
  6. Step 6: Final answer
    x = 18,703.16

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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.