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Finding the Fourth Proportional to 10,604.80, 15,902.40 and 4,758.40

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Solution

The fourth proportional to 10,604.80, 15,902.40 and 4,758.40 is: 7,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,604.80 : 15,902.40 = 4,758.40 : x
  2. Step 2: Convert to fraction form
    10,604.80/15,902.40 = 4,758.40/x
  3. Step 3: Cross multiply
    10,604.80x = 15,902.40 × 4,758.40
  4. Step 4: Simplify right side
    10,604.80x = 75,669,980.16
  5. Step 5: Solve for x
    x = 75,669,980.16/10,604.80
  6. Step 6: Final answer
    x = 7,135.45

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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.