Home / 12,342.24-18,515.66-4,947.28

Finding the Fourth Proportional to 12,342.24, 18,515.66 and 4,947.28

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Solution

The fourth proportional to 12,342.24, 18,515.66 and 4,947.28 is: 7,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.24 : 18,515.66 = 4,947.28 : x
  2. Step 2: Convert to fraction form
    12,342.24/18,515.66 = 4,947.28/x
  3. Step 3: Cross multiply
    12,342.24x = 18,515.66 × 4,947.28
  4. Step 4: Simplify right side
    12,342.24x = 91,602,125.12
  5. Step 5: Solve for x
    x = 91,602,125.12/12,342.24
  6. Step 6: Final answer
    x = 7,421.84

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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.