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Finding the Fourth Proportional to 35,104.20, 52,670.70 and 12,928.20

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Solution

The fourth proportional to 35,104.20, 52,670.70 and 12,928.20 is: 19,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,104.20 : 52,670.70 = 12,928.20 : x
  2. Step 2: Convert to fraction form
    35,104.20/52,670.70 = 12,928.20/x
  3. Step 3: Cross multiply
    35,104.20x = 52,670.70 × 12,928.20
  4. Step 4: Simplify right side
    35,104.20x = 680,937,343.74
  5. Step 5: Solve for x
    x = 680,937,343.74/35,104.20
  6. Step 6: Final answer
    x = 19,397.60

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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.