Home / 13,909.72-20,865.86-4,549.79

Finding the Fourth Proportional to 13,909.72, 20,865.86 and 4,549.79

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Solution

The fourth proportional to 13,909.72, 20,865.86 and 4,549.79 is: 6,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.72 : 20,865.86 = 4,549.79 : x
  2. Step 2: Convert to fraction form
    13,909.72/20,865.86 = 4,549.79/x
  3. Step 3: Cross multiply
    13,909.72x = 20,865.86 × 4,549.79
  4. Step 4: Simplify right side
    13,909.72x = 94,935,257.93
  5. Step 5: Solve for x
    x = 94,935,257.93/13,909.72
  6. Step 6: Final answer
    x = 6,825.10

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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.