Home / 10,867.37-14,990.67-6,390.27

Finding the Fourth Proportional to 10,867.37, 14,990.67 and 6,390.27

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Solution

The fourth proportional to 10,867.37, 14,990.67 and 6,390.27 is: 8,814.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.37 : 14,990.67 = 6,390.27 : x
  2. Step 2: Convert to fraction form
    10,867.37/14,990.67 = 6,390.27/x
  3. Step 3: Cross multiply
    10,867.37x = 14,990.67 × 6,390.27
  4. Step 4: Simplify right side
    10,867.37x = 95,794,428.78
  5. Step 5: Solve for x
    x = 95,794,428.78/10,867.37
  6. Step 6: Final answer
    x = 8,814.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.