Home / 20,982.11-28,956.22-12,030.46

Finding the Fourth Proportional to 20,982.11, 28,956.22 and 12,030.46

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Solution

The fourth proportional to 20,982.11, 28,956.22 and 12,030.46 is: 16,602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.11 : 28,956.22 = 12,030.46 : x
  2. Step 2: Convert to fraction form
    20,982.11/28,956.22 = 12,030.46/x
  3. Step 3: Cross multiply
    20,982.11x = 28,956.22 × 12,030.46
  4. Step 4: Simplify right side
    20,982.11x = 348,356,543.99
  5. Step 5: Solve for x
    x = 348,356,543.99/20,982.11
  6. Step 6: Final answer
    x = 16,602.55

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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.