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Finding the Fourth Proportional to 13,998,430.20, 20,997,645.30 and 11,606,945.70

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Solution

The fourth proportional to 13,998,430.20, 20,997,645.30 and 11,606,945.70 is: 17,410,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998,430.20 : 20,997,645.30 = 11,606,945.70 : x
  2. Step 2: Convert to fraction form
    13,998,430.20/20,997,645.30 = 11,606,945.70/x
  3. Step 3: Cross multiply
    13,998,430.20x = 20,997,645.30 × 11,606,945.70
  4. Step 4: Simplify right side
    13,998,430.20x = 243,718,528,824,960.19
  5. Step 5: Solve for x
    x = 243,718,528,824,960.19/13,998,430.20
  6. Step 6: Final answer
    x = 17,410,418.55

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1.5x scale

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.