Home / 11,156.30-15,395.15-6,442.10

Finding the Fourth Proportional to 11,156.30, 15,395.15 and 6,442.10

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Solution

The fourth proportional to 11,156.30, 15,395.15 and 6,442.10 is: 8,889.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.30 : 15,395.15 = 6,442.10 : x
  2. Step 2: Convert to fraction form
    11,156.30/15,395.15 = 6,442.10/x
  3. Step 3: Cross multiply
    11,156.30x = 15,395.15 × 6,442.10
  4. Step 4: Simplify right side
    11,156.30x = 99,176,986.63
  5. Step 5: Solve for x
    x = 99,176,986.63/11,156.30
  6. Step 6: Final answer
    x = 8,889.78

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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.