Home / 39,150.92-54,018.90-22,379.72

Finding the Fourth Proportional to 39,150.92, 54,018.90 and 22,379.72

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Solution

The fourth proportional to 39,150.92, 54,018.90 and 22,379.72 is: 30,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,150.92 : 54,018.90 = 22,379.72 : x
  2. Step 2: Convert to fraction form
    39,150.92/54,018.90 = 22,379.72/x
  3. Step 3: Cross multiply
    39,150.92x = 54,018.90 × 22,379.72
  4. Step 4: Simplify right side
    39,150.92x = 1,208,927,856.71
  5. Step 5: Solve for x
    x = 1,208,927,856.71/39,150.92
  6. Step 6: Final answer
    x = 30,878.66

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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.