Home / 14,929.20-22,357.35-7,128.90

Finding the Fourth Proportional to 14,929.20, 22,357.35 and 7,128.90

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Solution

The fourth proportional to 14,929.20, 22,357.35 and 7,128.90 is: 10,675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,929.20 : 22,357.35 = 7,128.90 : x
  2. Step 2: Convert to fraction form
    14,929.20/22,357.35 = 7,128.90/x
  3. Step 3: Cross multiply
    14,929.20x = 22,357.35 × 7,128.90
  4. Step 4: Simplify right side
    14,929.20x = 159,383,312.42
  5. Step 5: Solve for x
    x = 159,383,312.42/14,929.20
  6. Step 6: Final answer
    x = 10,675.94

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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.