Home / 11,390.19-15,711.88-6,849.71

Finding the Fourth Proportional to 11,390.19, 15,711.88 and 6,849.71

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Solution

The fourth proportional to 11,390.19, 15,711.88 and 6,849.71 is: 9,448.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.19 : 15,711.88 = 6,849.71 : x
  2. Step 2: Convert to fraction form
    11,390.19/15,711.88 = 6,849.71/x
  3. Step 3: Cross multiply
    11,390.19x = 15,711.88 × 6,849.71
  4. Step 4: Simplify right side
    11,390.19x = 107,621,821.55
  5. Step 5: Solve for x
    x = 107,621,821.55/11,390.19
  6. Step 6: Final answer
    x = 9,448.64

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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.