Home / 38,784.50-58,176.75-12,491.90

Finding the Fourth Proportional to 38,784.50, 58,176.75 and 12,491.90

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Solution

The fourth proportional to 38,784.50, 58,176.75 and 12,491.90 is: 18,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.50 : 58,176.75 = 12,491.90 : x
  2. Step 2: Convert to fraction form
    38,784.50/58,176.75 = 12,491.90/x
  3. Step 3: Cross multiply
    38,784.50x = 58,176.75 × 12,491.90
  4. Step 4: Simplify right side
    38,784.50x = 726,738,143.33
  5. Step 5: Solve for x
    x = 726,738,143.33/38,784.50
  6. Step 6: Final answer
    x = 18,737.85

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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.