Home / 12,878,119.72-17,767,929.62-7,719,599.08

Finding the Fourth Proportional to 12,878,119.72, 17,767,929.62 and 7,719,599.08

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Solution

The fourth proportional to 12,878,119.72, 17,767,929.62 and 7,719,599.08 is: 10,650,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,119.72 : 17,767,929.62 = 7,719,599.08 : x
  2. Step 2: Convert to fraction form
    12,878,119.72/17,767,929.62 = 7,719,599.08/x
  3. Step 3: Cross multiply
    12,878,119.72x = 17,767,929.62 × 7,719,599.08
  4. Step 4: Simplify right side
    12,878,119.72x = 137,161,293,148,056.77
  5. Step 5: Solve for x
    x = 137,161,293,148,056.77/12,878,119.72
  6. Step 6: Final answer
    x = 10,650,723.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.