Home / 13,559.40-20,339.10-8,908.80

Finding the Fourth Proportional to 13,559.40, 20,339.10 and 8,908.80

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Solution

The fourth proportional to 13,559.40, 20,339.10 and 8,908.80 is: 13,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.40 : 20,339.10 = 8,908.80 : x
  2. Step 2: Convert to fraction form
    13,559.40/20,339.10 = 8,908.80/x
  3. Step 3: Cross multiply
    13,559.40x = 20,339.10 × 8,908.80
  4. Step 4: Simplify right side
    13,559.40x = 181,196,974.08
  5. Step 5: Solve for x
    x = 181,196,974.08/13,559.40
  6. Step 6: Final answer
    x = 13,363.20

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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.