Home / 20,839.24-31,262.10-6,985

Finding the Fourth Proportional to 20,839.24, 31,262.10 and 6,985

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Solution

The fourth proportional to 20,839.24, 31,262.10 and 6,985 is: 10,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.24 : 31,262.10 = 6,985 : x
  2. Step 2: Convert to fraction form
    20,839.24/31,262.10 = 6,985/x
  3. Step 3: Cross multiply
    20,839.24x = 31,262.10 × 6,985
  4. Step 4: Simplify right side
    20,839.24x = 218,365,768.50
  5. Step 5: Solve for x
    x = 218,365,768.50/20,839.24
  6. Step 6: Final answer
    x = 10,478.59

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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.