Home / 13,125,836.46-18,112,684.13-7,618,322.39

Finding the Fourth Proportional to 13,125,836.46, 18,112,684.13 and 7,618,322.39

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Solution

The fourth proportional to 13,125,836.46, 18,112,684.13 and 7,618,322.39 is: 10,512,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125,836.46 : 18,112,684.13 = 7,618,322.39 : x
  2. Step 2: Convert to fraction form
    13,125,836.46/18,112,684.13 = 7,618,322.39/x
  3. Step 3: Cross multiply
    13,125,836.46x = 18,112,684.13 × 7,618,322.39
  4. Step 4: Simplify right side
    13,125,836.46x = 137,988,267,050,576.66
  5. Step 5: Solve for x
    x = 137,988,267,050,576.66/13,125,836.46
  6. Step 6: Final answer
    x = 10,512,721.80

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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.