Home / 20,851.40-31,289.07-20,682.14

Finding the Fourth Proportional to 20,851.40, 31,289.07 and 20,682.14

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Solution

The fourth proportional to 20,851.40, 31,289.07 and 20,682.14 is: 31,035.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.40 : 31,289.07 = 20,682.14 : x
  2. Step 2: Convert to fraction form
    20,851.40/31,289.07 = 20,682.14/x
  3. Step 3: Cross multiply
    20,851.40x = 31,289.07 × 20,682.14
  4. Step 4: Simplify right side
    20,851.40x = 647,124,769.76
  5. Step 5: Solve for x
    x = 647,124,769.76/20,851.40
  6. Step 6: Final answer
    x = 31,035.08

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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.