Home / 20,891.04-31,337.31-6,851.40

Finding the Fourth Proportional to 20,891.04, 31,337.31 and 6,851.40

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Solution

The fourth proportional to 20,891.04, 31,337.31 and 6,851.40 is: 10,277.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.04 : 31,337.31 = 6,851.40 : x
  2. Step 2: Convert to fraction form
    20,891.04/31,337.31 = 6,851.40/x
  3. Step 3: Cross multiply
    20,891.04x = 31,337.31 × 6,851.40
  4. Step 4: Simplify right side
    20,891.04x = 214,704,445.73
  5. Step 5: Solve for x
    x = 214,704,445.73/20,891.04
  6. Step 6: Final answer
    x = 10,277.35

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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.