Home / 11,148.45-15,388.16-6,435.87

Finding the Fourth Proportional to 11,148.45, 15,388.16 and 6,435.87

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Solution

The fourth proportional to 11,148.45, 15,388.16 and 6,435.87 is: 8,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.45 : 15,388.16 = 6,435.87 : x
  2. Step 2: Convert to fraction form
    11,148.45/15,388.16 = 6,435.87/x
  3. Step 3: Cross multiply
    11,148.45x = 15,388.16 × 6,435.87
  4. Step 4: Simplify right side
    11,148.45x = 99,036,165.12
  5. Step 5: Solve for x
    x = 99,036,165.12/11,148.45
  6. Step 6: Final answer
    x = 8,883.40

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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.