Home / 20,803.17-31,204.75-18,998.89

Finding the Fourth Proportional to 20,803.17, 31,204.75 and 18,998.89

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Solution

The fourth proportional to 20,803.17, 31,204.75 and 18,998.89 is: 28,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.17 : 31,204.75 = 18,998.89 : x
  2. Step 2: Convert to fraction form
    20,803.17/31,204.75 = 18,998.89/x
  3. Step 3: Cross multiply
    20,803.17x = 31,204.75 × 18,998.89
  4. Step 4: Simplify right side
    20,803.17x = 592,855,612.73
  5. Step 5: Solve for x
    x = 592,855,612.73/20,803.17
  6. Step 6: Final answer
    x = 28,498.33

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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.