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Finding the Fourth Proportional to 14,996,938.84, 20,695,744.02 and 8,121,399.64

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Solution

The fourth proportional to 14,996,938.84, 20,695,744.02 and 8,121,399.64 is: 11,207,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,996,938.84 : 20,695,744.02 = 8,121,399.64 : x
  2. Step 2: Convert to fraction form
    14,996,938.84/20,695,744.02 = 8,121,399.64/x
  3. Step 3: Cross multiply
    14,996,938.84x = 20,695,744.02 × 8,121,399.64
  4. Step 4: Simplify right side
    14,996,938.84x = 168,078,408,033,560.16
  5. Step 5: Solve for x
    x = 168,078,408,033,560.16/14,996,938.84
  6. Step 6: Final answer
    x = 11,207,514.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.