Home / 15,787,035.28-21,786,108.40-8,543,691.28

Finding the Fourth Proportional to 15,787,035.28, 21,786,108.40 and 8,543,691.28

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Solution

The fourth proportional to 15,787,035.28, 21,786,108.40 and 8,543,691.28 is: 11,790,293.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787,035.28 : 21,786,108.40 = 8,543,691.28 : x
  2. Step 2: Convert to fraction form
    15,787,035.28/21,786,108.40 = 8,543,691.28/x
  3. Step 3: Cross multiply
    15,787,035.28x = 21,786,108.40 × 8,543,691.28
  4. Step 4: Simplify right side
    15,787,035.28x = 186,133,784,362,214.72
  5. Step 5: Solve for x
    x = 186,133,784,362,214.72/15,787,035.28
  6. Step 6: Final answer
    x = 11,790,293.81

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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.