Home / 12,878,889.40-19,327,191.36-5,305,855.15

Finding the Fourth Proportional to 12,878,889.40, 19,327,191.36 and 5,305,855.15

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Solution

The fourth proportional to 12,878,889.40, 19,327,191.36 and 5,305,855.15 is: 7,962,431.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,889.40 : 19,327,191.36 = 5,305,855.15 : x
  2. Step 2: Convert to fraction form
    12,878,889.40/19,327,191.36 = 5,305,855.15/x
  3. Step 3: Cross multiply
    12,878,889.40x = 19,327,191.36 × 5,305,855.15
  4. Step 4: Simplify right side
    12,878,889.40x = 102,547,277,812,491.52
  5. Step 5: Solve for x
    x = 102,547,277,812,491.52/12,878,889.40
  6. Step 6: Final answer
    x = 7,962,431.75

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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.