Home / 21,785.40-32,672.43-6,986.70

Finding the Fourth Proportional to 21,785.40, 32,672.43 and 6,986.70

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Solution

The fourth proportional to 21,785.40, 32,672.43 and 6,986.70 is: 10,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.40 : 32,672.43 = 6,986.70 : x
  2. Step 2: Convert to fraction form
    21,785.40/32,672.43 = 6,986.70/x
  3. Step 3: Cross multiply
    21,785.40x = 32,672.43 × 6,986.70
  4. Step 4: Simplify right side
    21,785.40x = 228,272,466.68
  5. Step 5: Solve for x
    x = 228,272,466.68/21,785.40
  6. Step 6: Final answer
    x = 10,478.23

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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.