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Finding the Fourth Proportional to 18,147,602.80, 27,221,404.20 and 18,021,631.60

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Solution

The fourth proportional to 18,147,602.80, 27,221,404.20 and 18,021,631.60 is: 27,032,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147,602.80 : 27,221,404.20 = 18,021,631.60 : x
  2. Step 2: Convert to fraction form
    18,147,602.80/27,221,404.20 = 18,021,631.60/x
  3. Step 3: Cross multiply
    18,147,602.80x = 27,221,404.20 × 18,021,631.60
  4. Step 4: Simplify right side
    18,147,602.80x = 490,574,118,127,092.75
  5. Step 5: Solve for x
    x = 490,574,118,127,092.75/18,147,602.80
  6. Step 6: Final answer
    x = 27,032,447.40

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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.