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Finding the Fourth Proportional to 13,149,111.20, 19,723,666.80 and 13,149,111.20

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Solution

The fourth proportional to 13,149,111.20, 19,723,666.80 and 13,149,111.20 is: 19,723,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149,111.20 : 19,723,666.80 = 13,149,111.20 : x
  2. Step 2: Convert to fraction form
    13,149,111.20/19,723,666.80 = 13,149,111.20/x
  3. Step 3: Cross multiply
    13,149,111.20x = 19,723,666.80 × 13,149,111.20
  4. Step 4: Simplify right side
    13,149,111.20x = 259,348,688,024,948.16
  5. Step 5: Solve for x
    x = 259,348,688,024,948.16/13,149,111.20
  6. Step 6: Final answer
    x = 19,723,666.80

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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.