Home / 10,474.80-15,717.32-4,928.70

Finding the Fourth Proportional to 10,474.80, 15,717.32 and 4,928.70

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Solution

The fourth proportional to 10,474.80, 15,717.32 and 4,928.70 is: 7,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,474.80 : 15,717.32 = 4,928.70 : x
  2. Step 2: Convert to fraction form
    10,474.80/15,717.32 = 4,928.70/x
  3. Step 3: Cross multiply
    10,474.80x = 15,717.32 × 4,928.70
  4. Step 4: Simplify right side
    10,474.80x = 77,465,876.50
  5. Step 5: Solve for x
    x = 77,465,876.50/10,474.80
  6. Step 6: Final answer
    x = 7,395.45

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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.