Home / 10,223,719.80-15,348,021.30-5,172,430.20

Finding the Fourth Proportional to 10,223,719.80, 15,348,021.30 and 5,172,430.20

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Solution

The fourth proportional to 10,223,719.80, 15,348,021.30 and 5,172,430.20 is: 7,764,939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,223,719.80 : 15,348,021.30 = 5,172,430.20 : x
  2. Step 2: Convert to fraction form
    10,223,719.80/15,348,021.30 = 5,172,430.20/x
  3. Step 3: Cross multiply
    10,223,719.80x = 15,348,021.30 × 5,172,430.20
  4. Step 4: Simplify right side
    10,223,719.80x = 79,386,568,882,363.27
  5. Step 5: Solve for x
    x = 79,386,568,882,363.27/10,223,719.80
  6. Step 6: Final answer
    x = 7,764,939.81

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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.