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Finding the Fourth Proportional to 32,907.90, 45,392.00 and 21,578.15

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Solution

The fourth proportional to 32,907.90, 45,392.00 and 21,578.15 is: 29,764.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,907.90 : 45,392.00 = 21,578.15 : x
  2. Step 2: Convert to fraction form
    32,907.90/45,392.00 = 21,578.15/x
  3. Step 3: Cross multiply
    32,907.90x = 45,392.00 × 21,578.15
  4. Step 4: Simplify right side
    32,907.90x = 979,475,049.95
  5. Step 5: Solve for x
    x = 979,475,049.95/32,907.90
  6. Step 6: Final answer
    x = 29,764.13

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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.