Home / 11,390.19-15,718.05-6,354.65

Finding the Fourth Proportional to 11,390.19, 15,718.05 and 6,354.65

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Solution

The fourth proportional to 11,390.19, 15,718.05 and 6,354.65 is: 8,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.19 : 15,718.05 = 6,354.65 : x
  2. Step 2: Convert to fraction form
    11,390.19/15,718.05 = 6,354.65/x
  3. Step 3: Cross multiply
    11,390.19x = 15,718.05 × 6,354.65
  4. Step 4: Simplify right side
    11,390.19x = 99,882,627.84
  5. Step 5: Solve for x
    x = 99,882,627.84/11,390.19
  6. Step 6: Final answer
    x = 8,769.18

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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.