Home / 38,775.84-58,165.92-12,478.56

Finding the Fourth Proportional to 38,775.84, 58,165.92 and 12,478.56

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Solution

The fourth proportional to 38,775.84, 58,165.92 and 12,478.56 is: 18,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,775.84 : 58,165.92 = 12,478.56 : x
  2. Step 2: Convert to fraction form
    38,775.84/58,165.92 = 12,478.56/x
  3. Step 3: Cross multiply
    38,775.84x = 58,165.92 × 12,478.56
  4. Step 4: Simplify right side
    38,775.84x = 725,826,922.68
  5. Step 5: Solve for x
    x = 725,826,922.68/38,775.84
  6. Step 6: Final answer
    x = 18,718.54

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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.