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Finding the Fourth Proportional to 21,612.66, 32,390.74 and 11,073.75

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Solution

The fourth proportional to 21,612.66, 32,390.74 and 11,073.75 is: 16,596.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.66 : 32,390.74 = 11,073.75 : x
  2. Step 2: Convert to fraction form
    21,612.66/32,390.74 = 11,073.75/x
  3. Step 3: Cross multiply
    21,612.66x = 32,390.74 × 11,073.75
  4. Step 4: Simplify right side
    21,612.66x = 358,686,787.16
  5. Step 5: Solve for x
    x = 358,686,787.16/21,612.66
  6. Step 6: Final answer
    x = 16,596.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.