Home / 11,121.24-15,347.32-6,405.52

Finding the Fourth Proportional to 11,121.24, 15,347.32 and 6,405.52

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Solution

The fourth proportional to 11,121.24, 15,347.32 and 6,405.52 is: 8,839.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.24 : 15,347.32 = 6,405.52 : x
  2. Step 2: Convert to fraction form
    11,121.24/15,347.32 = 6,405.52/x
  3. Step 3: Cross multiply
    11,121.24x = 15,347.32 × 6,405.52
  4. Step 4: Simplify right side
    11,121.24x = 98,307,565.21
  5. Step 5: Solve for x
    x = 98,307,565.21/11,121.24
  6. Step 6: Final answer
    x = 8,839.62

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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.