Home / 11,153.32-15,391.58-6,437.60

Finding the Fourth Proportional to 11,153.32, 15,391.58 and 6,437.60

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Solution

The fourth proportional to 11,153.32, 15,391.58 and 6,437.60 is: 8,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.32 : 15,391.58 = 6,437.60 : x
  2. Step 2: Convert to fraction form
    11,153.32/15,391.58 = 6,437.60/x
  3. Step 3: Cross multiply
    11,153.32x = 15,391.58 × 6,437.60
  4. Step 4: Simplify right side
    11,153.32x = 99,084,872.53
  5. Step 5: Solve for x
    x = 99,084,872.53/11,153.32
  6. Step 6: Final answer
    x = 8,883.89

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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.