Home / 20,678,947.56-31,004,057.18-9,158,136.84

Finding the Fourth Proportional to 20,678,947.56, 31,004,057.18 and 9,158,136.84

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Solution

The fourth proportional to 20,678,947.56, 31,004,057.18 and 9,158,136.84 is: 13,730,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,947.56 : 31,004,057.18 = 9,158,136.84 : x
  2. Step 2: Convert to fraction form
    20,678,947.56/31,004,057.18 = 9,158,136.84/x
  3. Step 3: Cross multiply
    20,678,947.56x = 31,004,057.18 × 9,158,136.84
  4. Step 4: Simplify right side
    20,678,947.56x = 283,939,398,249,624.50
  5. Step 5: Solve for x
    x = 283,939,398,249,624.50/20,678,947.56
  6. Step 6: Final answer
    x = 13,730,843.77

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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.