Home / 28,719.90-43,079.92-8,729.57

Finding the Fourth Proportional to 28,719.90, 43,079.92 and 8,729.57

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Solution

The fourth proportional to 28,719.90, 43,079.92 and 8,729.57 is: 13,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.90 : 43,079.92 = 8,729.57 : x
  2. Step 2: Convert to fraction form
    28,719.90/43,079.92 = 8,729.57/x
  3. Step 3: Cross multiply
    28,719.90x = 43,079.92 × 8,729.57
  4. Step 4: Simplify right side
    28,719.90x = 376,069,263.11
  5. Step 5: Solve for x
    x = 376,069,263.11/28,719.90
  6. Step 6: Final answer
    x = 13,094.38

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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.