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Finding the Fourth Proportional to 21,382.60, 32,009.10 and 15,550.60

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Solution

The fourth proportional to 21,382.60, 32,009.10 and 15,550.60 is: 23,278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.60 : 32,009.10 = 15,550.60 : x
  2. Step 2: Convert to fraction form
    21,382.60/32,009.10 = 15,550.60/x
  3. Step 3: Cross multiply
    21,382.60x = 32,009.10 × 15,550.60
  4. Step 4: Simplify right side
    21,382.60x = 497,760,710.46
  5. Step 5: Solve for x
    x = 497,760,710.46/21,382.60
  6. Step 6: Final answer
    x = 23,278.77

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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.