Home / 19,351.20-28,997.36-8,815.08

Finding the Fourth Proportional to 19,351.20, 28,997.36 and 8,815.08

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Solution

The fourth proportional to 19,351.20, 28,997.36 and 8,815.08 is: 13,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,351.20 : 28,997.36 = 8,815.08 : x
  2. Step 2: Convert to fraction form
    19,351.20/28,997.36 = 8,815.08/x
  3. Step 3: Cross multiply
    19,351.20x = 28,997.36 × 8,815.08
  4. Step 4: Simplify right side
    19,351.20x = 255,614,048.19
  5. Step 5: Solve for x
    x = 255,614,048.19/19,351.20
  6. Step 6: Final answer
    x = 13,209.21

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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.