Home / 20,723.14-31,087.80-6,678.55

Finding the Fourth Proportional to 20,723.14, 31,087.80 and 6,678.55

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Solution

The fourth proportional to 20,723.14, 31,087.80 and 6,678.55 is: 10,018.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.14 : 31,087.80 = 6,678.55 : x
  2. Step 2: Convert to fraction form
    20,723.14/31,087.80 = 6,678.55/x
  3. Step 3: Cross multiply
    20,723.14x = 31,087.80 × 6,678.55
  4. Step 4: Simplify right side
    20,723.14x = 207,621,465.55
  5. Step 5: Solve for x
    x = 207,621,465.55/20,723.14
  6. Step 6: Final answer
    x = 10,018.82

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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.