Home / 10,084.28-13,915.68-5,607.78

Finding the Fourth Proportional to 10,084.28, 13,915.68 and 5,607.78

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Solution

The fourth proportional to 10,084.28, 13,915.68 and 5,607.78 is: 7,738.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,084.28 : 13,915.68 = 5,607.78 : x
  2. Step 2: Convert to fraction form
    10,084.28/13,915.68 = 5,607.78/x
  3. Step 3: Cross multiply
    10,084.28x = 13,915.68 × 5,607.78
  4. Step 4: Simplify right side
    10,084.28x = 78,036,071.99
  5. Step 5: Solve for x
    x = 78,036,071.99/10,084.28
  6. Step 6: Final answer
    x = 7,738.39

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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.