Home / 38,190.46-57,278.07-12,887.50

Finding the Fourth Proportional to 38,190.46, 57,278.07 and 12,887.50

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Solution

The fourth proportional to 38,190.46, 57,278.07 and 12,887.50 is: 19,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,190.46 : 57,278.07 = 12,887.50 : x
  2. Step 2: Convert to fraction form
    38,190.46/57,278.07 = 12,887.50/x
  3. Step 3: Cross multiply
    38,190.46x = 57,278.07 × 12,887.50
  4. Step 4: Simplify right side
    38,190.46x = 738,171,127.13
  5. Step 5: Solve for x
    x = 738,171,127.13/38,190.46
  6. Step 6: Final answer
    x = 19,328.68

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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.