Home / 13,572.20-18,728.48-8,266.02

Finding the Fourth Proportional to 13,572.20, 18,728.48 and 8,266.02

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Solution

The fourth proportional to 13,572.20, 18,728.48 and 8,266.02 is: 11,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.20 : 18,728.48 = 8,266.02 : x
  2. Step 2: Convert to fraction form
    13,572.20/18,728.48 = 8,266.02/x
  3. Step 3: Cross multiply
    13,572.20x = 18,728.48 × 8,266.02
  4. Step 4: Simplify right side
    13,572.20x = 154,809,990.25
  5. Step 5: Solve for x
    x = 154,809,990.25/13,572.20
  6. Step 6: Final answer
    x = 11,406.40

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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.