Home / 11,915.48-16,437.66-7,132.16

Finding the Fourth Proportional to 11,915.48, 16,437.66 and 7,132.16

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Solution

The fourth proportional to 11,915.48, 16,437.66 and 7,132.16 is: 9,838.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.48 : 16,437.66 = 7,132.16 : x
  2. Step 2: Convert to fraction form
    11,915.48/16,437.66 = 7,132.16/x
  3. Step 3: Cross multiply
    11,915.48x = 16,437.66 × 7,132.16
  4. Step 4: Simplify right side
    11,915.48x = 117,236,021.15
  5. Step 5: Solve for x
    x = 117,236,021.15/11,915.48
  6. Step 6: Final answer
    x = 9,838.97

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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.