Home / 39,140.98-58,699.20-12,839.62

Finding the Fourth Proportional to 39,140.98, 58,699.20 and 12,839.62

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Solution

The fourth proportional to 39,140.98, 58,699.20 and 12,839.62 is: 19,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.98 : 58,699.20 = 12,839.62 : x
  2. Step 2: Convert to fraction form
    39,140.98/58,699.20 = 12,839.62/x
  3. Step 3: Cross multiply
    39,140.98x = 58,699.20 × 12,839.62
  4. Step 4: Simplify right side
    39,140.98x = 753,675,422.30
  5. Step 5: Solve for x
    x = 753,675,422.30/39,140.98
  6. Step 6: Final answer
    x = 19,255.41

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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.