Home / 13,909.12-20,868.34-4,549.57

Finding the Fourth Proportional to 13,909.12, 20,868.34 and 4,549.57

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Solution

The fourth proportional to 13,909.12, 20,868.34 and 4,549.57 is: 6,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.12 : 20,868.34 = 4,549.57 : x
  2. Step 2: Convert to fraction form
    13,909.12/20,868.34 = 4,549.57/x
  3. Step 3: Cross multiply
    13,909.12x = 20,868.34 × 4,549.57
  4. Step 4: Simplify right side
    13,909.12x = 94,941,973.61
  5. Step 5: Solve for x
    x = 94,941,973.61/13,909.12
  6. Step 6: Final answer
    x = 6,825.88

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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.