Home / 28,027.92-42,041.80-9,309.40

Finding the Fourth Proportional to 28,027.92, 42,041.80 and 9,309.40

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Solution

The fourth proportional to 28,027.92, 42,041.80 and 9,309.40 is: 13,964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,027.92 : 42,041.80 = 9,309.40 : x
  2. Step 2: Convert to fraction form
    28,027.92/42,041.80 = 9,309.40/x
  3. Step 3: Cross multiply
    28,027.92x = 42,041.80 × 9,309.40
  4. Step 4: Simplify right side
    28,027.92x = 391,383,932.92
  5. Step 5: Solve for x
    x = 391,383,932.92/28,027.92
  6. Step 6: Final answer
    x = 13,964.07

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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.