Home / 20,775,402.40-31,172,434.80-9,410,000.80

Finding the Fourth Proportional to 20,775,402.40, 31,172,434.80 and 9,410,000.80

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Solution

The fourth proportional to 20,775,402.40, 31,172,434.80 and 9,410,000.80 is: 14,119,227.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,402.40 : 31,172,434.80 = 9,410,000.80 : x
  2. Step 2: Convert to fraction form
    20,775,402.40/31,172,434.80 = 9,410,000.80/x
  3. Step 3: Cross multiply
    20,775,402.40x = 31,172,434.80 × 9,410,000.80
  4. Step 4: Simplify right side
    20,775,402.40x = 293,332,636,405,947.88
  5. Step 5: Solve for x
    x = 293,332,636,405,947.88/20,775,402.40
  6. Step 6: Final answer
    x = 14,119,227.67

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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.