Home / 13,422.10-20,133.15-9,922.90

Finding the Fourth Proportional to 13,422.10, 20,133.15 and 9,922.90

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Solution

The fourth proportional to 13,422.10, 20,133.15 and 9,922.90 is: 14,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.10 : 20,133.15 = 9,922.90 : x
  2. Step 2: Convert to fraction form
    13,422.10/20,133.15 = 9,922.90/x
  3. Step 3: Cross multiply
    13,422.10x = 20,133.15 × 9,922.90
  4. Step 4: Simplify right side
    13,422.10x = 199,779,234.14
  5. Step 5: Solve for x
    x = 199,779,234.14/13,422.10
  6. Step 6: Final answer
    x = 14,884.35

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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.