Home / 38,607.20-57,905.40-12,314.60

Finding the Fourth Proportional to 38,607.20, 57,905.40 and 12,314.60

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Solution

The fourth proportional to 38,607.20, 57,905.40 and 12,314.60 is: 18,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,607.20 : 57,905.40 = 12,314.60 : x
  2. Step 2: Convert to fraction form
    38,607.20/57,905.40 = 12,314.60/x
  3. Step 3: Cross multiply
    38,607.20x = 57,905.40 × 12,314.60
  4. Step 4: Simplify right side
    38,607.20x = 713,081,838.84
  5. Step 5: Solve for x
    x = 713,081,838.84/38,607.20
  6. Step 6: Final answer
    x = 18,470.18

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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.