Home / 20,727.67-31,095.95-6,688.50

Finding the Fourth Proportional to 20,727.67, 31,095.95 and 6,688.50

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Solution

The fourth proportional to 20,727.67, 31,095.95 and 6,688.50 is: 10,034.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.67 : 31,095.95 = 6,688.50 : x
  2. Step 2: Convert to fraction form
    20,727.67/31,095.95 = 6,688.50/x
  3. Step 3: Cross multiply
    20,727.67x = 31,095.95 × 6,688.50
  4. Step 4: Simplify right side
    20,727.67x = 207,985,261.58
  5. Step 5: Solve for x
    x = 207,985,261.58/20,727.67
  6. Step 6: Final answer
    x = 10,034.18

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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.