Home / 18,299.07-25,252.71-9,915.57

Finding the Fourth Proportional to 18,299.07, 25,252.71 and 9,915.57

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Solution

The fourth proportional to 18,299.07, 25,252.71 and 9,915.57 is: 13,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.07 : 25,252.71 = 9,915.57 : x
  2. Step 2: Convert to fraction form
    18,299.07/25,252.71 = 9,915.57/x
  3. Step 3: Cross multiply
    18,299.07x = 25,252.71 × 9,915.57
  4. Step 4: Simplify right side
    18,299.07x = 250,395,013.69
  5. Step 5: Solve for x
    x = 250,395,013.69/18,299.07
  6. Step 6: Final answer
    x = 13,683.48

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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.