Home / 18,927.20-28,392.56-6,443.04

Finding the Fourth Proportional to 18,927.20, 28,392.56 and 6,443.04

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Solution

The fourth proportional to 18,927.20, 28,392.56 and 6,443.04 is: 9,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.20 : 28,392.56 = 6,443.04 : x
  2. Step 2: Convert to fraction form
    18,927.20/28,392.56 = 6,443.04/x
  3. Step 3: Cross multiply
    18,927.20x = 28,392.56 × 6,443.04
  4. Step 4: Simplify right side
    18,927.20x = 182,934,399.78
  5. Step 5: Solve for x
    x = 182,934,399.78/18,927.20
  6. Step 6: Final answer
    x = 9,665.16

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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.