Home / 10,929.16-16,390.24-4,687.48

Finding the Fourth Proportional to 10,929.16, 16,390.24 and 4,687.48

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Solution

The fourth proportional to 10,929.16, 16,390.24 and 4,687.48 is: 7,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.16 : 16,390.24 = 4,687.48 : x
  2. Step 2: Convert to fraction form
    10,929.16/16,390.24 = 4,687.48/x
  3. Step 3: Cross multiply
    10,929.16x = 16,390.24 × 4,687.48
  4. Step 4: Simplify right side
    10,929.16x = 76,828,922.20
  5. Step 5: Solve for x
    x = 76,828,922.20/10,929.16
  6. Step 6: Final answer
    x = 7,029.72

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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.