Home / 13,699,543.79-20,520,719.96-8,217,252.16

Finding the Fourth Proportional to 13,699,543.79, 20,520,719.96 and 8,217,252.16

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Solution

The fourth proportional to 13,699,543.79, 20,520,719.96 and 8,217,252.16 is: 12,308,725.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699,543.79 : 20,520,719.96 = 8,217,252.16 : x
  2. Step 2: Convert to fraction form
    13,699,543.79/20,520,719.96 = 8,217,252.16/x
  3. Step 3: Cross multiply
    13,699,543.79x = 20,520,719.96 × 8,217,252.16
  4. Step 4: Simplify right side
    13,699,543.79x = 168,623,930,416,065.12
  5. Step 5: Solve for x
    x = 168,623,930,416,065.12/13,699,543.79
  6. Step 6: Final answer
    x = 12,308,725.97

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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.