Home / 18,898,434-26,087,900.40-12,707,069.40

Finding the Fourth Proportional to 18,898,434, 26,087,900.40 and 12,707,069.40

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Solution

The fourth proportional to 18,898,434, 26,087,900.40 and 12,707,069.40 is: 17,541,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898,434 : 26,087,900.40 = 12,707,069.40 : x
  2. Step 2: Convert to fraction form
    18,898,434/26,087,900.40 = 12,707,069.40/x
  3. Step 3: Cross multiply
    18,898,434x = 26,087,900.40 × 12,707,069.40
  4. Step 4: Simplify right side
    18,898,434x = 331,500,760,883,087.75
  5. Step 5: Solve for x
    x = 331,500,760,883,087.75/18,898,434
  6. Step 6: Final answer
    x = 17,541,176.21

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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.