Home / 13,984.18-20,955.13-8,431.31

Finding the Fourth Proportional to 13,984.18, 20,955.13 and 8,431.31

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Solution

The fourth proportional to 13,984.18, 20,955.13 and 8,431.31 is: 12,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.18 : 20,955.13 = 8,431.31 : x
  2. Step 2: Convert to fraction form
    13,984.18/20,955.13 = 8,431.31/x
  3. Step 3: Cross multiply
    13,984.18x = 20,955.13 × 8,431.31
  4. Step 4: Simplify right side
    13,984.18x = 176,679,197.12
  5. Step 5: Solve for x
    x = 176,679,197.12/13,984.18
  6. Step 6: Final answer
    x = 12,634.22

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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.