Home / 18,929.20-28,395.56-6,445.04

Finding the Fourth Proportional to 18,929.20, 28,395.56 and 6,445.04

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Solution

The fourth proportional to 18,929.20, 28,395.56 and 6,445.04 is: 9,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.20 : 28,395.56 = 6,445.04 : x
  2. Step 2: Convert to fraction form
    18,929.20/28,395.56 = 6,445.04/x
  3. Step 3: Cross multiply
    18,929.20x = 28,395.56 × 6,445.04
  4. Step 4: Simplify right side
    18,929.20x = 183,010,520.02
  5. Step 5: Solve for x
    x = 183,010,520.02/18,929.20
  6. Step 6: Final answer
    x = 9,668.16

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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.