Home / 13,667,378.28-18,865,731.69-7,868,471.10

Finding the Fourth Proportional to 13,667,378.28, 18,865,731.69 and 7,868,471.10

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Solution

The fourth proportional to 13,667,378.28, 18,865,731.69 and 7,868,471.10 is: 10,861,224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667,378.28 : 18,865,731.69 = 7,868,471.10 : x
  2. Step 2: Convert to fraction form
    13,667,378.28/18,865,731.69 = 7,868,471.10/x
  3. Step 3: Cross multiply
    13,667,378.28x = 18,865,731.69 × 7,868,471.10
  4. Step 4: Simplify right side
    13,667,378.28x = 148,444,464,583,119.16
  5. Step 5: Solve for x
    x = 148,444,464,583,119.16/13,667,378.28
  6. Step 6: Final answer
    x = 10,861,224.56

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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.