Home / 18,299.05-25,252.70-9,915.55

Finding the Fourth Proportional to 18,299.05, 25,252.70 and 9,915.55

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Solution

The fourth proportional to 18,299.05, 25,252.70 and 9,915.55 is: 13,683.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.05 : 25,252.70 = 9,915.55 : x
  2. Step 2: Convert to fraction form
    18,299.05/25,252.70 = 9,915.55/x
  3. Step 3: Cross multiply
    18,299.05x = 25,252.70 × 9,915.55
  4. Step 4: Simplify right side
    18,299.05x = 250,394,409.49
  5. Step 5: Solve for x
    x = 250,394,409.49/18,299.05
  6. Step 6: Final answer
    x = 13,683.46

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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.