Home / 39,279.46-58,928.42-12,984.20

Finding the Fourth Proportional to 39,279.46, 58,928.42 and 12,984.20

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Solution

The fourth proportional to 39,279.46, 58,928.42 and 12,984.20 is: 19,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.46 : 58,928.42 = 12,984.20 : x
  2. Step 2: Convert to fraction form
    39,279.46/58,928.42 = 12,984.20/x
  3. Step 3: Cross multiply
    39,279.46x = 58,928.42 × 12,984.20
  4. Step 4: Simplify right side
    39,279.46x = 765,138,399.70
  5. Step 5: Solve for x
    x = 765,138,399.70/39,279.46
  6. Step 6: Final answer
    x = 19,479.35

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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.