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Finding the Fourth Proportional to 39,671.76, 59,507.68 and 11,969.76

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Solution

The fourth proportional to 39,671.76, 59,507.68 and 11,969.76 is: 17,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,671.76 : 59,507.68 = 11,969.76 : x
  2. Step 2: Convert to fraction form
    39,671.76/59,507.68 = 11,969.76/x
  3. Step 3: Cross multiply
    39,671.76x = 59,507.68 × 11,969.76
  4. Step 4: Simplify right side
    39,671.76x = 712,292,647.76
  5. Step 5: Solve for x
    x = 712,292,647.76/39,671.76
  6. Step 6: Final answer
    x = 17,954.65

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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.