Home / 13,667,340.72-18,865,680.09-7,868,433.66

Finding the Fourth Proportional to 13,667,340.72, 18,865,680.09 and 7,868,433.66

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Solution

The fourth proportional to 13,667,340.72, 18,865,680.09 and 7,868,433.66 is: 10,861,173.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667,340.72 : 18,865,680.09 = 7,868,433.66 : x
  2. Step 2: Convert to fraction form
    13,667,340.72/18,865,680.09 = 7,868,433.66/x
  3. Step 3: Cross multiply
    13,667,340.72x = 18,865,680.09 × 7,868,433.66
  4. Step 4: Simplify right side
    13,667,340.72x = 148,443,352,238,947.84
  5. Step 5: Solve for x
    x = 148,443,352,238,947.84/13,667,340.72
  6. Step 6: Final answer
    x = 10,861,173.02

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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.