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Finding the Fourth Proportional to 15,203,689.07, 20,981,429.71 and 8,677,187.63

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Solution

The fourth proportional to 15,203,689.07, 20,981,429.71 and 8,677,187.63 is: 11,974,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203,689.07 : 20,981,429.71 = 8,677,187.63 : x
  2. Step 2: Convert to fraction form
    15,203,689.07/20,981,429.71 = 8,677,187.63/x
  3. Step 3: Cross multiply
    15,203,689.07x = 20,981,429.71 × 8,677,187.63
  4. Step 4: Simplify right side
    15,203,689.07x = 182,059,802,339,326.50
  5. Step 5: Solve for x
    x = 182,059,802,339,326.50/15,203,689.07
  6. Step 6: Final answer
    x = 11,974,712.29

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1.5x scale

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.