Home / 20,726.46-31,095.86-6,688.69

Finding the Fourth Proportional to 20,726.46, 31,095.86 and 6,688.69

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Solution

The fourth proportional to 20,726.46, 31,095.86 and 6,688.69 is: 10,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.46 : 31,095.86 = 6,688.69 : x
  2. Step 2: Convert to fraction form
    20,726.46/31,095.86 = 6,688.69/x
  3. Step 3: Cross multiply
    20,726.46x = 31,095.86 × 6,688.69
  4. Step 4: Simplify right side
    20,726.46x = 207,990,567.82
  5. Step 5: Solve for x
    x = 207,990,567.82/20,726.46
  6. Step 6: Final answer
    x = 10,035.03

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1.5x scale

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.