Home / 10,072.20-13,958.54-9,931.26

Finding the Fourth Proportional to 10,072.20, 13,958.54 and 9,931.26

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Solution

The fourth proportional to 10,072.20, 13,958.54 and 9,931.26 is: 13,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.20 : 13,958.54 = 9,931.26 : x
  2. Step 2: Convert to fraction form
    10,072.20/13,958.54 = 9,931.26/x
  3. Step 3: Cross multiply
    10,072.20x = 13,958.54 × 9,931.26
  4. Step 4: Simplify right side
    10,072.20x = 138,625,840.30
  5. Step 5: Solve for x
    x = 138,625,840.30/10,072.20
  6. Step 6: Final answer
    x = 13,763.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.