Home / 18,749.74-25,867.20-10,787.68

Finding the Fourth Proportional to 18,749.74, 25,867.20 and 10,787.68

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Solution

The fourth proportional to 18,749.74, 25,867.20 and 10,787.68 is: 14,882.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.74 : 25,867.20 = 10,787.68 : x
  2. Step 2: Convert to fraction form
    18,749.74/25,867.20 = 10,787.68/x
  3. Step 3: Cross multiply
    18,749.74x = 25,867.20 × 10,787.68
  4. Step 4: Simplify right side
    18,749.74x = 279,047,076.10
  5. Step 5: Solve for x
    x = 279,047,076.10/18,749.74
  6. Step 6: Final answer
    x = 14,882.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.