Home / 20,553.24-28,335.23-12,995.79

Finding the Fourth Proportional to 20,553.24, 28,335.23 and 12,995.79

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Solution

The fourth proportional to 20,553.24, 28,335.23 and 12,995.79 is: 17,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.24 : 28,335.23 = 12,995.79 : x
  2. Step 2: Convert to fraction form
    20,553.24/28,335.23 = 12,995.79/x
  3. Step 3: Cross multiply
    20,553.24x = 28,335.23 × 12,995.79
  4. Step 4: Simplify right side
    20,553.24x = 368,238,633.70
  5. Step 5: Solve for x
    x = 368,238,633.70/20,553.24
  6. Step 6: Final answer
    x = 17,916.33

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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.