Home / 14,644.20-20,209-7,929.88

Finding the Fourth Proportional to 14,644.20, 20,209 and 7,929.88

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Solution

The fourth proportional to 14,644.20, 20,209 and 7,929.88 is: 10,943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.20 : 20,209 = 7,929.88 : x
  2. Step 2: Convert to fraction form
    14,644.20/20,209 = 7,929.88/x
  3. Step 3: Cross multiply
    14,644.20x = 20,209 × 7,929.88
  4. Step 4: Simplify right side
    14,644.20x = 160,254,944.92
  5. Step 5: Solve for x
    x = 160,254,944.92/14,644.20
  6. Step 6: Final answer
    x = 10,943.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.