Home / 21,423.51-32,118.26-8,935.74

Finding the Fourth Proportional to 21,423.51, 32,118.26 and 8,935.74

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Solution

The fourth proportional to 21,423.51, 32,118.26 and 8,935.74 is: 13,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.51 : 32,118.26 = 8,935.74 : x
  2. Step 2: Convert to fraction form
    21,423.51/32,118.26 = 8,935.74/x
  3. Step 3: Cross multiply
    21,423.51x = 32,118.26 × 8,935.74
  4. Step 4: Simplify right side
    21,423.51x = 287,000,375.93
  5. Step 5: Solve for x
    x = 287,000,375.93/21,423.51
  6. Step 6: Final answer
    x = 13,396.52

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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.