Home / 12,987,266.60-19,480,899.90-5,419,663.40

Finding the Fourth Proportional to 12,987,266.60, 19,480,899.90 and 5,419,663.40

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Solution

The fourth proportional to 12,987,266.60, 19,480,899.90 and 5,419,663.40 is: 8,129,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987,266.60 : 19,480,899.90 = 5,419,663.40 : x
  2. Step 2: Convert to fraction form
    12,987,266.60/19,480,899.90 = 5,419,663.40/x
  3. Step 3: Cross multiply
    12,987,266.60x = 19,480,899.90 × 5,419,663.40
  4. Step 4: Simplify right side
    12,987,266.60x = 105,579,920,187,093.66
  5. Step 5: Solve for x
    x = 105,579,920,187,093.66/12,987,266.60
  6. Step 6: Final answer
    x = 8,129,495.10

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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.