Home / 10,711.71-14,778.59-6,939.68

Finding the Fourth Proportional to 10,711.71, 14,778.59 and 6,939.68

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Solution

The fourth proportional to 10,711.71, 14,778.59 and 6,939.68 is: 9,574.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,711.71 : 14,778.59 = 6,939.68 : x
  2. Step 2: Convert to fraction form
    10,711.71/14,778.59 = 6,939.68/x
  3. Step 3: Cross multiply
    10,711.71x = 14,778.59 × 6,939.68
  4. Step 4: Simplify right side
    10,711.71x = 102,558,576.86
  5. Step 5: Solve for x
    x = 102,558,576.86/10,711.71
  6. Step 6: Final answer
    x = 9,574.44

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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.