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Finding the Fourth Proportional to 21,253.70, 32,039.72 and 19,826.48

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Solution

The fourth proportional to 21,253.70, 32,039.72 and 19,826.48 is: 29,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.70 : 32,039.72 = 19,826.48 : x
  2. Step 2: Convert to fraction form
    21,253.70/32,039.72 = 19,826.48/x
  3. Step 3: Cross multiply
    21,253.70x = 32,039.72 × 19,826.48
  4. Step 4: Simplify right side
    21,253.70x = 635,234,867.79
  5. Step 5: Solve for x
    x = 635,234,867.79/21,253.70
  6. Step 6: Final answer
    x = 29,888.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.