Home / 21,000.95-31,505.67-6,209.54

Finding the Fourth Proportional to 21,000.95, 31,505.67 and 6,209.54

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Solution

The fourth proportional to 21,000.95, 31,505.67 and 6,209.54 is: 9,315.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.95 : 31,505.67 = 6,209.54 : x
  2. Step 2: Convert to fraction form
    21,000.95/31,505.67 = 6,209.54/x
  3. Step 3: Cross multiply
    21,000.95x = 31,505.67 × 6,209.54
  4. Step 4: Simplify right side
    21,000.95x = 195,635,560.56
  5. Step 5: Solve for x
    x = 195,635,560.56/21,000.95
  6. Step 6: Final answer
    x = 9,315.56

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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.