Home / 10,929.20-16,399.56-6,315.44

Finding the Fourth Proportional to 10,929.20, 16,399.56 and 6,315.44

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Solution

The fourth proportional to 10,929.20, 16,399.56 and 6,315.44 is: 9,476.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.20 : 16,399.56 = 6,315.44 : x
  2. Step 2: Convert to fraction form
    10,929.20/16,399.56 = 6,315.44/x
  3. Step 3: Cross multiply
    10,929.20x = 16,399.56 × 6,315.44
  4. Step 4: Simplify right side
    10,929.20x = 103,570,437.21
  5. Step 5: Solve for x
    x = 103,570,437.21/10,929.20
  6. Step 6: Final answer
    x = 9,476.49

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1.5x scale

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.