Home / 38,918.16-58,390.20-12,623.76

Finding the Fourth Proportional to 38,918.16, 58,390.20 and 12,623.76

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Solution

The fourth proportional to 38,918.16, 58,390.20 and 12,623.76 is: 18,939.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,918.16 : 58,390.20 = 12,623.76 : x
  2. Step 2: Convert to fraction form
    38,918.16/58,390.20 = 12,623.76/x
  3. Step 3: Cross multiply
    38,918.16x = 58,390.20 × 12,623.76
  4. Step 4: Simplify right side
    38,918.16x = 737,103,871.15
  5. Step 5: Solve for x
    x = 737,103,871.15/38,918.16
  6. Step 6: Final answer
    x = 18,939.84

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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.