Home / 15,120,624.60-20,857,185.18-9,678,668.76

Finding the Fourth Proportional to 15,120,624.60, 20,857,185.18 and 9,678,668.76

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Solution

The fourth proportional to 15,120,624.60, 20,857,185.18 and 9,678,668.76 is: 13,350,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120,624.60 : 20,857,185.18 = 9,678,668.76 : x
  2. Step 2: Convert to fraction form
    15,120,624.60/20,857,185.18 = 9,678,668.76/x
  3. Step 3: Cross multiply
    15,120,624.60x = 20,857,185.18 × 9,678,668.76
  4. Step 4: Simplify right side
    15,120,624.60x = 201,869,786,623,200.97
  5. Step 5: Solve for x
    x = 201,869,786,623,200.97/15,120,624.60
  6. Step 6: Final answer
    x = 13,350,624.86

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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.