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Finding the Fourth Proportional to 35,488.64, 48,982.88 and 21,338.76

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Solution

The fourth proportional to 35,488.64, 48,982.88 and 21,338.76 is: 29,452.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,488.64 : 48,982.88 = 21,338.76 : x
  2. Step 2: Convert to fraction form
    35,488.64/48,982.88 = 21,338.76/x
  3. Step 3: Cross multiply
    35,488.64x = 48,982.88 × 21,338.76
  4. Step 4: Simplify right side
    35,488.64x = 1,045,233,920.43
  5. Step 5: Solve for x
    x = 1,045,233,920.43/35,488.64
  6. Step 6: Final answer
    x = 29,452.63

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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.