Home / 21,456.71-29,608.62-12,023.45

Finding the Fourth Proportional to 21,456.71, 29,608.62 and 12,023.45

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Solution

The fourth proportional to 21,456.71, 29,608.62 and 12,023.45 is: 16,591.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.71 : 29,608.62 = 12,023.45 : x
  2. Step 2: Convert to fraction form
    21,456.71/29,608.62 = 12,023.45/x
  3. Step 3: Cross multiply
    21,456.71x = 29,608.62 × 12,023.45
  4. Step 4: Simplify right side
    21,456.71x = 355,997,614.10
  5. Step 5: Solve for x
    x = 355,997,614.10/21,456.71
  6. Step 6: Final answer
    x = 16,591.44

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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.