Home / 20,992.60-31,335.31-18,501.56

Finding the Fourth Proportional to 20,992.60, 31,335.31 and 18,501.56

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Solution

The fourth proportional to 20,992.60, 31,335.31 and 18,501.56 is: 27,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.60 : 31,335.31 = 18,501.56 : x
  2. Step 2: Convert to fraction form
    20,992.60/31,335.31 = 18,501.56/x
  3. Step 3: Cross multiply
    20,992.60x = 31,335.31 × 18,501.56
  4. Step 4: Simplify right side
    20,992.60x = 579,752,154.08
  5. Step 5: Solve for x
    x = 579,752,154.08/20,992.60
  6. Step 6: Final answer
    x = 27,616.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.