Home / 19,129.32-28,695.72-7,443.40

Finding the Fourth Proportional to 19,129.32, 28,695.72 and 7,443.40

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Solution

The fourth proportional to 19,129.32, 28,695.72 and 7,443.40 is: 11,165.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.32 : 28,695.72 = 7,443.40 : x
  2. Step 2: Convert to fraction form
    19,129.32/28,695.72 = 7,443.40/x
  3. Step 3: Cross multiply
    19,129.32x = 28,695.72 × 7,443.40
  4. Step 4: Simplify right side
    19,129.32x = 213,593,722.25
  5. Step 5: Solve for x
    x = 213,593,722.25/19,129.32
  6. Step 6: Final answer
    x = 11,165.78

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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.