Home / 21,709.71-32,559.64-6,128.55

Finding the Fourth Proportional to 21,709.71, 32,559.64 and 6,128.55

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Solution

The fourth proportional to 21,709.71, 32,559.64 and 6,128.55 is: 9,191.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.71 : 32,559.64 = 6,128.55 : x
  2. Step 2: Convert to fraction form
    21,709.71/32,559.64 = 6,128.55/x
  3. Step 3: Cross multiply
    21,709.71x = 32,559.64 × 6,128.55
  4. Step 4: Simplify right side
    21,709.71x = 199,543,366.40
  5. Step 5: Solve for x
    x = 199,543,366.40/21,709.71
  6. Step 6: Final answer
    x = 9,191.43

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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.