Home / 11,440.21-15,787.37-6,404.47

Finding the Fourth Proportional to 11,440.21, 15,787.37 and 6,404.47

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Solution

The fourth proportional to 11,440.21, 15,787.37 and 6,404.47 is: 8,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.21 : 15,787.37 = 6,404.47 : x
  2. Step 2: Convert to fraction form
    11,440.21/15,787.37 = 6,404.47/x
  3. Step 3: Cross multiply
    11,440.21x = 15,787.37 × 6,404.47
  4. Step 4: Simplify right side
    11,440.21x = 101,109,722.46
  5. Step 5: Solve for x
    x = 101,109,722.46/11,440.21
  6. Step 6: Final answer
    x = 8,838.10

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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.