Home / 15,085,688.85-20,820,444.53-8,471,019.87

Finding the Fourth Proportional to 15,085,688.85, 20,820,444.53 and 8,471,019.87

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Solution

The fourth proportional to 15,085,688.85, 20,820,444.53 and 8,471,019.87 is: 11,691,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085,688.85 : 20,820,444.53 = 8,471,019.87 : x
  2. Step 2: Convert to fraction form
    15,085,688.85/20,820,444.53 = 8,471,019.87/x
  3. Step 3: Cross multiply
    15,085,688.85x = 20,820,444.53 × 8,471,019.87
  4. Step 4: Simplify right side
    15,085,688.85x = 176,370,399,273,507.69
  5. Step 5: Solve for x
    x = 176,370,399,273,507.69/15,085,688.85
  6. Step 6: Final answer
    x = 11,691,239.36

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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.