Home / 11,155.91-15,396.53-6,440.22

Finding the Fourth Proportional to 11,155.91, 15,396.53 and 6,440.22

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Solution

The fourth proportional to 11,155.91, 15,396.53 and 6,440.22 is: 8,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.91 : 15,396.53 = 6,440.22 : x
  2. Step 2: Convert to fraction form
    11,155.91/15,396.53 = 6,440.22/x
  3. Step 3: Cross multiply
    11,155.91x = 15,396.53 × 6,440.22
  4. Step 4: Simplify right side
    11,155.91x = 99,157,008.24
  5. Step 5: Solve for x
    x = 99,157,008.24/11,155.91
  6. Step 6: Final answer
    x = 8,888.30

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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.