Home / 20,605,555.28-30,901,334.52-7,139,239.76

Finding the Fourth Proportional to 20,605,555.28, 30,901,334.52 and 7,139,239.76

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Solution

The fourth proportional to 20,605,555.28, 30,901,334.52 and 7,139,239.76 is: 10,706,434.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605,555.28 : 30,901,334.52 = 7,139,239.76 : x
  2. Step 2: Convert to fraction form
    20,605,555.28/30,901,334.52 = 7,139,239.76/x
  3. Step 3: Cross multiply
    20,605,555.28x = 30,901,334.52 × 7,139,239.76
  4. Step 4: Simplify right side
    20,605,555.28x = 220,612,036,042,244.50
  5. Step 5: Solve for x
    x = 220,612,036,042,244.50/20,605,555.28
  6. Step 6: Final answer
    x = 10,706,434.89

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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.