Home / 13,647.23-20,476.91-13,425.78

Finding the Fourth Proportional to 13,647.23, 20,476.91 and 13,425.78

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Solution

The fourth proportional to 13,647.23, 20,476.91 and 13,425.78 is: 20,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.23 : 20,476.91 = 13,425.78 : x
  2. Step 2: Convert to fraction form
    13,647.23/20,476.91 = 13,425.78/x
  3. Step 3: Cross multiply
    13,647.23x = 20,476.91 × 13,425.78
  4. Step 4: Simplify right side
    13,647.23x = 274,918,421.61
  5. Step 5: Solve for x
    x = 274,918,421.61/13,647.23
  6. Step 6: Final answer
    x = 20,144.64

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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.