Home / 11,351.20-15,664.70-6,315.74

Finding the Fourth Proportional to 11,351.20, 15,664.70 and 6,315.74

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Solution

The fourth proportional to 11,351.20, 15,664.70 and 6,315.74 is: 8,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.20 : 15,664.70 = 6,315.74 : x
  2. Step 2: Convert to fraction form
    11,351.20/15,664.70 = 6,315.74/x
  3. Step 3: Cross multiply
    11,351.20x = 15,664.70 × 6,315.74
  4. Step 4: Simplify right side
    11,351.20x = 98,934,172.38
  5. Step 5: Solve for x
    x = 98,934,172.38/11,351.20
  6. Step 6: Final answer
    x = 8,715.75

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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.