Home / 12,920,954.94-17,831,700.75-7,119,729.66

Finding the Fourth Proportional to 12,920,954.94, 17,831,700.75 and 7,119,729.66

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Solution

The fourth proportional to 12,920,954.94, 17,831,700.75 and 7,119,729.66 is: 9,825,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,954.94 : 17,831,700.75 = 7,119,729.66 : x
  2. Step 2: Convert to fraction form
    12,920,954.94/17,831,700.75 = 7,119,729.66/x
  3. Step 3: Cross multiply
    12,920,954.94x = 17,831,700.75 × 7,119,729.66
  4. Step 4: Simplify right side
    12,920,954.94x = 126,956,888,718,019.25
  5. Step 5: Solve for x
    x = 126,956,888,718,019.25/12,920,954.94
  6. Step 6: Final answer
    x = 9,825,658.34

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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.