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Finding the Fourth Proportional to 21,048.16, 29,046.62 and 11,488.12

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Solution

The fourth proportional to 21,048.16, 29,046.62 and 11,488.12 is: 15,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.16 : 29,046.62 = 11,488.12 : x
  2. Step 2: Convert to fraction form
    21,048.16/29,046.62 = 11,488.12/x
  3. Step 3: Cross multiply
    21,048.16x = 29,046.62 × 11,488.12
  4. Step 4: Simplify right side
    21,048.16x = 333,691,012.26
  5. Step 5: Solve for x
    x = 333,691,012.26/21,048.16
  6. Step 6: Final answer
    x = 15,853.69

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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.