Home / 20,770.02-31,161.50-7,443.14

Finding the Fourth Proportional to 20,770.02, 31,161.50 and 7,443.14

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Solution

The fourth proportional to 20,770.02, 31,161.50 and 7,443.14 is: 11,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.02 : 31,161.50 = 7,443.14 : x
  2. Step 2: Convert to fraction form
    20,770.02/31,161.50 = 7,443.14/x
  3. Step 3: Cross multiply
    20,770.02x = 31,161.50 × 7,443.14
  4. Step 4: Simplify right side
    20,770.02x = 231,939,407.11
  5. Step 5: Solve for x
    x = 231,939,407.11/20,770.02
  6. Step 6: Final answer
    x = 11,167.03

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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.