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Finding the Fourth Proportional to 18,671,361.60, 28,007,042.40 and 17,236,470.90

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Solution

The fourth proportional to 18,671,361.60, 28,007,042.40 and 17,236,470.90 is: 25,854,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671,361.60 : 28,007,042.40 = 17,236,470.90 : x
  2. Step 2: Convert to fraction form
    18,671,361.60/28,007,042.40 = 17,236,470.90/x
  3. Step 3: Cross multiply
    18,671,361.60x = 28,007,042.40 × 17,236,470.90
  4. Step 4: Simplify right side
    18,671,361.60x = 482,742,571,322,666.06
  5. Step 5: Solve for x
    x = 482,742,571,322,666.06/18,671,361.60
  6. Step 6: Final answer
    x = 25,854,706.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.