Home / 10,252.47-15,378.69-7,915.87

Finding the Fourth Proportional to 10,252.47, 15,378.69 and 7,915.87

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Solution

The fourth proportional to 10,252.47, 15,378.69 and 7,915.87 is: 11,873.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,252.47 : 15,378.69 = 7,915.87 : x
  2. Step 2: Convert to fraction form
    10,252.47/15,378.69 = 7,915.87/x
  3. Step 3: Cross multiply
    10,252.47x = 15,378.69 × 7,915.87
  4. Step 4: Simplify right side
    10,252.47x = 121,735,710.81
  5. Step 5: Solve for x
    x = 121,735,710.81/10,252.47
  6. Step 6: Final answer
    x = 11,873.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.