Home / 21,025.27-31,543.22-6,985.37

Finding the Fourth Proportional to 21,025.27, 31,543.22 and 6,985.37

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Solution

The fourth proportional to 21,025.27, 31,543.22 and 6,985.37 is: 10,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.27 : 31,543.22 = 6,985.37 : x
  2. Step 2: Convert to fraction form
    21,025.27/31,543.22 = 6,985.37/x
  3. Step 3: Cross multiply
    21,025.27x = 31,543.22 × 6,985.37
  4. Step 4: Simplify right side
    21,025.27x = 220,341,077.74
  5. Step 5: Solve for x
    x = 220,341,077.74/21,025.27
  6. Step 6: Final answer
    x = 10,479.82

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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.