Home / 20,736,149.40-31,104,224.10-18,846,581.40

Finding the Fourth Proportional to 20,736,149.40, 31,104,224.10 and 18,846,581.40

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Solution

The fourth proportional to 20,736,149.40, 31,104,224.10 and 18,846,581.40 is: 28,269,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,149.40 : 31,104,224.10 = 18,846,581.40 : x
  2. Step 2: Convert to fraction form
    20,736,149.40/31,104,224.10 = 18,846,581.40/x
  3. Step 3: Cross multiply
    20,736,149.40x = 31,104,224.10 × 18,846,581.40
  4. Step 4: Simplify right side
    20,736,149.40x = 586,208,291,384,491.75
  5. Step 5: Solve for x
    x = 586,208,291,384,491.75/20,736,149.40
  6. Step 6: Final answer
    x = 28,269,872.10

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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.