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Finding the Fourth Proportional to 13,206,542.40, 18,451,368 and 13,206,542.40

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Solution

The fourth proportional to 13,206,542.40, 18,451,368 and 13,206,542.40 is: 18,451,368

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206,542.40 : 18,451,368 = 13,206,542.40 : x
  2. Step 2: Convert to fraction form
    13,206,542.40/18,451,368 = 13,206,542.40/x
  3. Step 3: Cross multiply
    13,206,542.40x = 18,451,368 × 13,206,542.40
  4. Step 4: Simplify right side
    13,206,542.40x = 243,678,773,830,003.22
  5. Step 5: Solve for x
    x = 243,678,773,830,003.22/13,206,542.40
  6. Step 6: Final answer
    x = 18,451,368

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.