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Finding the Fourth Proportional to 32,418.72, 44,774.74 and 21,789.90

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Solution

The fourth proportional to 32,418.72, 44,774.74 and 21,789.90 is: 30,094.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,418.72 : 44,774.74 = 21,789.90 : x
  2. Step 2: Convert to fraction form
    32,418.72/44,774.74 = 21,789.90/x
  3. Step 3: Cross multiply
    32,418.72x = 44,774.74 × 21,789.90
  4. Step 4: Simplify right side
    32,418.72x = 975,637,107.13
  5. Step 5: Solve for x
    x = 975,637,107.13/32,418.72
  6. Step 6: Final answer
    x = 30,094.87

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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.