Home / 11,221.63-15,486.17-6,915.67

Finding the Fourth Proportional to 11,221.63, 15,486.17 and 6,915.67

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Solution

The fourth proportional to 11,221.63, 15,486.17 and 6,915.67 is: 9,543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.63 : 15,486.17 = 6,915.67 : x
  2. Step 2: Convert to fraction form
    11,221.63/15,486.17 = 6,915.67/x
  3. Step 3: Cross multiply
    11,221.63x = 15,486.17 × 6,915.67
  4. Step 4: Simplify right side
    11,221.63x = 107,097,167.99
  5. Step 5: Solve for x
    x = 107,097,167.99/11,221.63
  6. Step 6: Final answer
    x = 9,543.82

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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.