Home / 11,115.41-15,343.13-6,401.57

Finding the Fourth Proportional to 11,115.41, 15,343.13 and 6,401.57

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Solution

The fourth proportional to 11,115.41, 15,343.13 and 6,401.57 is: 8,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.41 : 15,343.13 = 6,401.57 : x
  2. Step 2: Convert to fraction form
    11,115.41/15,343.13 = 6,401.57/x
  3. Step 3: Cross multiply
    11,115.41x = 15,343.13 × 6,401.57
  4. Step 4: Simplify right side
    11,115.41x = 98,220,088.71
  5. Step 5: Solve for x
    x = 98,220,088.71/11,115.41
  6. Step 6: Final answer
    x = 8,836.39

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Half scale
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Double scale
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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.