Home / 11,390.57-15,720.35-6,674.84

Finding the Fourth Proportional to 11,390.57, 15,720.35 and 6,674.84

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Solution

The fourth proportional to 11,390.57, 15,720.35 and 6,674.84 is: 9,212.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.57 : 15,720.35 = 6,674.84 : x
  2. Step 2: Convert to fraction form
    11,390.57/15,720.35 = 6,674.84/x
  3. Step 3: Cross multiply
    11,390.57x = 15,720.35 × 6,674.84
  4. Step 4: Simplify right side
    11,390.57x = 104,930,826.92
  5. Step 5: Solve for x
    x = 104,930,826.92/11,390.57
  6. Step 6: Final answer
    x = 9,212.08

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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.