Home / 28,750.12-43,125.18-18,230.64

Finding the Fourth Proportional to 28,750.12, 43,125.18 and 18,230.64

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Solution

The fourth proportional to 28,750.12, 43,125.18 and 18,230.64 is: 27,345.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,750.12 : 43,125.18 = 18,230.64 : x
  2. Step 2: Convert to fraction form
    28,750.12/43,125.18 = 18,230.64/x
  3. Step 3: Cross multiply
    28,750.12x = 43,125.18 × 18,230.64
  4. Step 4: Simplify right side
    28,750.12x = 786,199,631.52
  5. Step 5: Solve for x
    x = 786,199,631.52/28,750.12
  6. Step 6: Final answer
    x = 27,345.96

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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.