Home / 39,215.26-58,830.18-12,921.85

Finding the Fourth Proportional to 39,215.26, 58,830.18 and 12,921.85

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Solution

The fourth proportional to 39,215.26, 58,830.18 and 12,921.85 is: 19,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.26 : 58,830.18 = 12,921.85 : x
  2. Step 2: Convert to fraction form
    39,215.26/58,830.18 = 12,921.85/x
  3. Step 3: Cross multiply
    39,215.26x = 58,830.18 × 12,921.85
  4. Step 4: Simplify right side
    39,215.26x = 760,194,761.43
  5. Step 5: Solve for x
    x = 760,194,761.43/39,215.26
  6. Step 6: Final answer
    x = 19,385.18

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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.