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Finding the Fourth Proportional to 19,943.98, 29,915.98 and 13,685.02

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Solution

The fourth proportional to 19,943.98, 29,915.98 and 13,685.02 is: 20,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.98 : 29,915.98 = 13,685.02 : x
  2. Step 2: Convert to fraction form
    19,943.98/29,915.98 = 13,685.02/x
  3. Step 3: Cross multiply
    19,943.98x = 29,915.98 × 13,685.02
  4. Step 4: Simplify right side
    19,943.98x = 409,400,784.62
  5. Step 5: Solve for x
    x = 409,400,784.62/19,943.98
  6. Step 6: Final answer
    x = 20,527.54

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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.