Home / 20,775.67-31,154.27-5,981.13

Finding the Fourth Proportional to 20,775.67, 31,154.27 and 5,981.13

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Solution

The fourth proportional to 20,775.67, 31,154.27 and 5,981.13 is: 8,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.67 : 31,154.27 = 5,981.13 : x
  2. Step 2: Convert to fraction form
    20,775.67/31,154.27 = 5,981.13/x
  3. Step 3: Cross multiply
    20,775.67x = 31,154.27 × 5,981.13
  4. Step 4: Simplify right side
    20,775.67x = 186,337,583.15
  5. Step 5: Solve for x
    x = 186,337,583.15/20,775.67
  6. Step 6: Final answer
    x = 8,969.03

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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.