Home / 12,878,889.90-19,327,192.11-5,305,855.65

Finding the Fourth Proportional to 12,878,889.90, 19,327,192.11 and 5,305,855.65

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Solution

The fourth proportional to 12,878,889.90, 19,327,192.11 and 5,305,855.65 is: 7,962,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,889.90 : 19,327,192.11 = 5,305,855.65 : x
  2. Step 2: Convert to fraction form
    12,878,889.90/19,327,192.11 = 5,305,855.65/x
  3. Step 3: Cross multiply
    12,878,889.90x = 19,327,192.11 × 5,305,855.65
  4. Step 4: Simplify right side
    12,878,889.90x = 102,547,291,455,478.92
  5. Step 5: Solve for x
    x = 102,547,291,455,478.92/12,878,889.90
  6. Step 6: Final answer
    x = 7,962,432.50

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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.