Home / 11,156.01-15,393.56-6,439.38

Finding the Fourth Proportional to 11,156.01, 15,393.56 and 6,439.38

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Solution

The fourth proportional to 11,156.01, 15,393.56 and 6,439.38 is: 8,885.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.01 : 15,393.56 = 6,439.38 : x
  2. Step 2: Convert to fraction form
    11,156.01/15,393.56 = 6,439.38/x
  3. Step 3: Cross multiply
    11,156.01x = 15,393.56 × 6,439.38
  4. Step 4: Simplify right side
    11,156.01x = 99,124,950.20
  5. Step 5: Solve for x
    x = 99,124,950.20/11,156.01
  6. Step 6: Final answer
    x = 8,885.34

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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.