Home / 18,712.11-28,072.95-5,564.46

Finding the Fourth Proportional to 18,712.11, 28,072.95 and 5,564.46

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Solution

The fourth proportional to 18,712.11, 28,072.95 and 5,564.46 is: 8,348.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.11 : 28,072.95 = 5,564.46 : x
  2. Step 2: Convert to fraction form
    18,712.11/28,072.95 = 5,564.46/x
  3. Step 3: Cross multiply
    18,712.11x = 28,072.95 × 5,564.46
  4. Step 4: Simplify right side
    18,712.11x = 156,210,807.36
  5. Step 5: Solve for x
    x = 156,210,807.36/18,712.11
  6. Step 6: Final answer
    x = 8,348.11

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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.