Home / 20,851.48-31,269.36-6,808.24

Finding the Fourth Proportional to 20,851.48, 31,269.36 and 6,808.24

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Solution

The fourth proportional to 20,851.48, 31,269.36 and 6,808.24 is: 10,209.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.48 : 31,269.36 = 6,808.24 : x
  2. Step 2: Convert to fraction form
    20,851.48/31,269.36 = 6,808.24/x
  3. Step 3: Cross multiply
    20,851.48x = 31,269.36 × 6,808.24
  4. Step 4: Simplify right side
    20,851.48x = 212,889,307.53
  5. Step 5: Solve for x
    x = 212,889,307.53/20,851.48
  6. Step 6: Final answer
    x = 10,209.79

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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.