Home / 13,720.08-18,926.82-9,002.64

Finding the Fourth Proportional to 13,720.08, 18,926.82 and 9,002.64

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Solution

The fourth proportional to 13,720.08, 18,926.82 and 9,002.64 is: 12,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.08 : 18,926.82 = 9,002.64 : x
  2. Step 2: Convert to fraction form
    13,720.08/18,926.82 = 9,002.64/x
  3. Step 3: Cross multiply
    13,720.08x = 18,926.82 × 9,002.64
  4. Step 4: Simplify right side
    13,720.08x = 170,391,346.80
  5. Step 5: Solve for x
    x = 170,391,346.80/13,720.08
  6. Step 6: Final answer
    x = 12,419.12

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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.