Home / 21,002,631.10-31,510,945.05-18,744,999.10

Finding the Fourth Proportional to 21,002,631.10, 31,510,945.05 and 18,744,999.10

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Solution

The fourth proportional to 21,002,631.10, 31,510,945.05 and 18,744,999.10 is: 28,123,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,631.10 : 31,510,945.05 = 18,744,999.10 : x
  2. Step 2: Convert to fraction form
    21,002,631.10/31,510,945.05 = 18,744,999.10/x
  3. Step 3: Cross multiply
    21,002,631.10x = 31,510,945.05 × 18,744,999.10
  4. Step 4: Simplify right side
    21,002,631.10x = 590,672,636,602,399.50
  5. Step 5: Solve for x
    x = 590,672,636,602,399.50/21,002,631.10
  6. Step 6: Final answer
    x = 28,123,744.77

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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.