Home / 12,920,960.34-17,831,721.18-7,119,741.12

Finding the Fourth Proportional to 12,920,960.34, 17,831,721.18 and 7,119,741.12

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Solution

The fourth proportional to 12,920,960.34, 17,831,721.18 and 7,119,741.12 is: 9,825,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,960.34 : 17,831,721.18 = 7,119,741.12 : x
  2. Step 2: Convert to fraction form
    12,920,960.34/17,831,721.18 = 7,119,741.12/x
  3. Step 3: Cross multiply
    12,920,960.34x = 17,831,721.18 × 7,119,741.12
  4. Step 4: Simplify right side
    12,920,960.34x = 126,957,238,525,620.92
  5. Step 5: Solve for x
    x = 126,957,238,525,620.92/12,920,960.34
  6. Step 6: Final answer
    x = 9,825,681.31

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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.