Home / 12,640,655.34-17,443,980.18-6,839,309.79

Finding the Fourth Proportional to 12,640,655.34, 17,443,980.18 and 6,839,309.79

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Solution

The fourth proportional to 12,640,655.34, 17,443,980.18 and 6,839,309.79 is: 9,438,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640,655.34 : 17,443,980.18 = 6,839,309.79 : x
  2. Step 2: Convert to fraction form
    12,640,655.34/17,443,980.18 = 6,839,309.79/x
  3. Step 3: Cross multiply
    12,640,655.34x = 17,443,980.18 × 6,839,309.79
  4. Step 4: Simplify right side
    12,640,655.34x = 119,304,784,421,639.95
  5. Step 5: Solve for x
    x = 119,304,784,421,639.95/12,640,655.34
  6. Step 6: Final answer
    x = 9,438,180.32

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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.