Home / 38,738.40-58,115.70-12,445.80

Finding the Fourth Proportional to 38,738.40, 58,115.70 and 12,445.80

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Solution

The fourth proportional to 38,738.40, 58,115.70 and 12,445.80 is: 18,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,738.40 : 58,115.70 = 12,445.80 : x
  2. Step 2: Convert to fraction form
    38,738.40/58,115.70 = 12,445.80/x
  3. Step 3: Cross multiply
    38,738.40x = 58,115.70 × 12,445.80
  4. Step 4: Simplify right side
    38,738.40x = 723,296,379.06
  5. Step 5: Solve for x
    x = 723,296,379.06/38,738.40
  6. Step 6: Final answer
    x = 18,671.30

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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.