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Finding the Fourth Proportional to 18,825,707.87, 25,978,385.42 and 10,564,998.80

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Solution

The fourth proportional to 18,825,707.87, 25,978,385.42 and 10,564,998.80 is: 14,579,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825,707.87 : 25,978,385.42 = 10,564,998.80 : x
  2. Step 2: Convert to fraction form
    18,825,707.87/25,978,385.42 = 10,564,998.80/x
  3. Step 3: Cross multiply
    18,825,707.87x = 25,978,385.42 × 10,564,998.80
  4. Step 4: Simplify right side
    18,825,707.87x = 274,461,610,735,412.50
  5. Step 5: Solve for x
    x = 274,461,610,735,412.50/18,825,707.87
  6. Step 6: Final answer
    x = 14,579,085.82

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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.