Home / 12,920,618.66-17,831,248-7,119,398.88

Finding the Fourth Proportional to 12,920,618.66, 17,831,248 and 7,119,398.88

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Solution

The fourth proportional to 12,920,618.66, 17,831,248 and 7,119,398.88 is: 9,825,208.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,618.66 : 17,831,248 = 7,119,398.88 : x
  2. Step 2: Convert to fraction form
    12,920,618.66/17,831,248 = 7,119,398.88/x
  3. Step 3: Cross multiply
    12,920,618.66x = 17,831,248 × 7,119,398.88
  4. Step 4: Simplify right side
    12,920,618.66x = 126,947,767,040,202.23
  5. Step 5: Solve for x
    x = 126,947,767,040,202.23/12,920,618.66
  6. Step 6: Final answer
    x = 9,825,208.09

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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.