Home / 21,543.39-32,295.51-7,689.15

Finding the Fourth Proportional to 21,543.39, 32,295.51 and 7,689.15

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Solution

The fourth proportional to 21,543.39, 32,295.51 and 7,689.15 is: 11,526.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.39 : 32,295.51 = 7,689.15 : x
  2. Step 2: Convert to fraction form
    21,543.39/32,295.51 = 7,689.15/x
  3. Step 3: Cross multiply
    21,543.39x = 32,295.51 × 7,689.15
  4. Step 4: Simplify right side
    21,543.39x = 248,325,020.72
  5. Step 5: Solve for x
    x = 248,325,020.72/21,543.39
  6. Step 6: Final answer
    x = 11,526.74

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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.