Home / 10,915.14-15,063.51-6,441.54

Finding the Fourth Proportional to 10,915.14, 15,063.51 and 6,441.54

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Solution

The fourth proportional to 10,915.14, 15,063.51 and 6,441.54 is: 8,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.14 : 15,063.51 = 6,441.54 : x
  2. Step 2: Convert to fraction form
    10,915.14/15,063.51 = 6,441.54/x
  3. Step 3: Cross multiply
    10,915.14x = 15,063.51 × 6,441.54
  4. Step 4: Simplify right side
    10,915.14x = 97,032,202.21
  5. Step 5: Solve for x
    x = 97,032,202.21/10,915.14
  6. Step 6: Final answer
    x = 8,889.69

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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.