Home / 28,115.93-42,173.90-7,339.43

Finding the Fourth Proportional to 28,115.93, 42,173.90 and 7,339.43

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Solution

The fourth proportional to 28,115.93, 42,173.90 and 7,339.43 is: 11,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.93 : 42,173.90 = 7,339.43 : x
  2. Step 2: Convert to fraction form
    28,115.93/42,173.90 = 7,339.43/x
  3. Step 3: Cross multiply
    28,115.93x = 42,173.90 × 7,339.43
  4. Step 4: Simplify right side
    28,115.93x = 309,532,139.31
  5. Step 5: Solve for x
    x = 309,532,139.31/28,115.93
  6. Step 6: Final answer
    x = 11,009.14

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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.