Home / 18,868.34-28,302.58-5,720.82

Finding the Fourth Proportional to 18,868.34, 28,302.58 and 5,720.82

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Solution

The fourth proportional to 18,868.34, 28,302.58 and 5,720.82 is: 8,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.34 : 28,302.58 = 5,720.82 : x
  2. Step 2: Convert to fraction form
    18,868.34/28,302.58 = 5,720.82/x
  3. Step 3: Cross multiply
    18,868.34x = 28,302.58 × 5,720.82
  4. Step 4: Simplify right side
    18,868.34x = 161,913,951.41
  5. Step 5: Solve for x
    x = 161,913,951.41/18,868.34
  6. Step 6: Final answer
    x = 8,581.25

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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.