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Finding the Fourth Proportional to 17,908,915.20, 26,863,372.80 and 15,137,548.80

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Solution

The fourth proportional to 17,908,915.20, 26,863,372.80 and 15,137,548.80 is: 22,706,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,908,915.20 : 26,863,372.80 = 15,137,548.80 : x
  2. Step 2: Convert to fraction form
    17,908,915.20/26,863,372.80 = 15,137,548.80/x
  3. Step 3: Cross multiply
    17,908,915.20x = 26,863,372.80 × 15,137,548.80
  4. Step 4: Simplify right side
    17,908,915.20x = 406,645,616,692,592.69
  5. Step 5: Solve for x
    x = 406,645,616,692,592.69/17,908,915.20
  6. Step 6: Final answer
    x = 22,706,323.20

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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.