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Finding the Fourth Proportional to 18,191,947.80, 27,287,921.70 and 18,191,947.80

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Solution

The fourth proportional to 18,191,947.80, 27,287,921.70 and 18,191,947.80 is: 27,287,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191,947.80 : 27,287,921.70 = 18,191,947.80 : x
  2. Step 2: Convert to fraction form
    18,191,947.80/27,287,921.70 = 18,191,947.80/x
  3. Step 3: Cross multiply
    18,191,947.80x = 27,287,921.70 × 18,191,947.80
  4. Step 4: Simplify right side
    18,191,947.80x = 496,420,447,136,887.25
  5. Step 5: Solve for x
    x = 496,420,447,136,887.25/18,191,947.80
  6. Step 6: Final answer
    x = 27,287,921.70

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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.