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Finding the Fourth Proportional to 39,013.60, 58,498.80 and 12,704.80

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Solution

The fourth proportional to 39,013.60, 58,498.80 and 12,704.80 is: 19,050.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,013.60 : 58,498.80 = 12,704.80 : x
  2. Step 2: Convert to fraction form
    39,013.60/58,498.80 = 12,704.80/x
  3. Step 3: Cross multiply
    39,013.60x = 58,498.80 × 12,704.80
  4. Step 4: Simplify right side
    39,013.60x = 743,215,554.24
  5. Step 5: Solve for x
    x = 743,215,554.24/39,013.60
  6. Step 6: Final answer
    x = 19,050.17

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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.