Home / 12,771,616.90-19,171,422.15-7,984,711.30

Finding the Fourth Proportional to 12,771,616.90, 19,171,422.15 and 7,984,711.30

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Solution

The fourth proportional to 12,771,616.90, 19,171,422.15 and 7,984,711.30 is: 11,985,817.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,616.90 : 19,171,422.15 = 7,984,711.30 : x
  2. Step 2: Convert to fraction form
    12,771,616.90/19,171,422.15 = 7,984,711.30/x
  3. Step 3: Cross multiply
    12,771,616.90x = 19,171,422.15 × 7,984,711.30
  4. Step 4: Simplify right side
    12,771,616.90x = 153,078,271,078,175.28
  5. Step 5: Solve for x
    x = 153,078,271,078,175.28/12,771,616.90
  6. Step 6: Final answer
    x = 11,985,817.64

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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.