Home / 19,938.20-29,915.40-8,252.60

Finding the Fourth Proportional to 19,938.20, 29,915.40 and 8,252.60

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Solution

The fourth proportional to 19,938.20, 29,915.40 and 8,252.60 is: 12,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.20 : 29,915.40 = 8,252.60 : x
  2. Step 2: Convert to fraction form
    19,938.20/29,915.40 = 8,252.60/x
  3. Step 3: Cross multiply
    19,938.20x = 29,915.40 × 8,252.60
  4. Step 4: Simplify right side
    19,938.20x = 246,879,830.04
  5. Step 5: Solve for x
    x = 246,879,830.04/19,938.20
  6. Step 6: Final answer
    x = 12,382.25

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1.5x scale

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.