Home / 18,672,671.20-28,009,006.80-12,933,108.40

Finding the Fourth Proportional to 18,672,671.20, 28,009,006.80 and 12,933,108.40

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Solution

The fourth proportional to 18,672,671.20, 28,009,006.80 and 12,933,108.40 is: 19,399,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672,671.20 : 28,009,006.80 = 12,933,108.40 : x
  2. Step 2: Convert to fraction form
    18,672,671.20/28,009,006.80 = 12,933,108.40/x
  3. Step 3: Cross multiply
    18,672,671.20x = 28,009,006.80 × 12,933,108.40
  4. Step 4: Simplify right side
    18,672,671.20x = 362,243,521,120,737.12
  5. Step 5: Solve for x
    x = 362,243,521,120,737.12/18,672,671.20
  6. Step 6: Final answer
    x = 19,399,662.60

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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.