Home / 15,786,521.40-21,785,399.48-8,543,177.40

Finding the Fourth Proportional to 15,786,521.40, 21,785,399.48 and 8,543,177.40

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Solution

The fourth proportional to 15,786,521.40, 21,785,399.48 and 8,543,177.40 is: 11,789,584.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786,521.40 : 21,785,399.48 = 8,543,177.40 : x
  2. Step 2: Convert to fraction form
    15,786,521.40/21,785,399.48 = 8,543,177.40/x
  3. Step 3: Cross multiply
    15,786,521.40x = 21,785,399.48 × 8,543,177.40
  4. Step 4: Simplify right side
    15,786,521.40x = 186,116,532,487,507.75
  5. Step 5: Solve for x
    x = 186,116,532,487,507.75/15,786,521.40
  6. Step 6: Final answer
    x = 11,789,584.78

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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.