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Finding the Fourth Proportional to 11,574.80, 15,972.08 and 6,469.36

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Solution

The fourth proportional to 11,574.80, 15,972.08 and 6,469.36 is: 8,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,574.80 : 15,972.08 = 6,469.36 : x
  2. Step 2: Convert to fraction form
    11,574.80/15,972.08 = 6,469.36/x
  3. Step 3: Cross multiply
    11,574.80x = 15,972.08 × 6,469.36
  4. Step 4: Simplify right side
    11,574.80x = 103,329,135.47
  5. Step 5: Solve for x
    x = 103,329,135.47/11,574.80
  6. Step 6: Final answer
    x = 8,927.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.