Home / 10,291.75-14,212.71-8,790.92

Finding the Fourth Proportional to 10,291.75, 14,212.71 and 8,790.92

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Solution

The fourth proportional to 10,291.75, 14,212.71 and 8,790.92 is: 12,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,291.75 : 14,212.71 = 8,790.92 : x
  2. Step 2: Convert to fraction form
    10,291.75/14,212.71 = 8,790.92/x
  3. Step 3: Cross multiply
    10,291.75x = 14,212.71 × 8,790.92
  4. Step 4: Simplify right side
    10,291.75x = 124,942,794.08
  5. Step 5: Solve for x
    x = 124,942,794.08/10,291.75
  6. Step 6: Final answer
    x = 12,140.09

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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.