Home / 19,915.10-29,872.65-19,040.30

Finding the Fourth Proportional to 19,915.10, 29,872.65 and 19,040.30

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Solution

The fourth proportional to 19,915.10, 29,872.65 and 19,040.30 is: 28,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.10 : 29,872.65 = 19,040.30 : x
  2. Step 2: Convert to fraction form
    19,915.10/29,872.65 = 19,040.30/x
  3. Step 3: Cross multiply
    19,915.10x = 29,872.65 × 19,040.30
  4. Step 4: Simplify right side
    19,915.10x = 568,784,217.80
  5. Step 5: Solve for x
    x = 568,784,217.80/19,915.10
  6. Step 6: Final answer
    x = 28,560.45

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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.