Home / 21,143.55-31,720.19-6,352.75

Finding the Fourth Proportional to 21,143.55, 31,720.19 and 6,352.75

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Solution

The fourth proportional to 21,143.55, 31,720.19 and 6,352.75 is: 9,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.55 : 31,720.19 = 6,352.75 : x
  2. Step 2: Convert to fraction form
    21,143.55/31,720.19 = 6,352.75/x
  3. Step 3: Cross multiply
    21,143.55x = 31,720.19 × 6,352.75
  4. Step 4: Simplify right side
    21,143.55x = 201,510,437.02
  5. Step 5: Solve for x
    x = 201,510,437.02/21,143.55
  6. Step 6: Final answer
    x = 9,530.59

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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.