Home / 20,805,367.70-31,208,051.55-20,506,769.30

Finding the Fourth Proportional to 20,805,367.70, 31,208,051.55 and 20,506,769.30

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Solution

The fourth proportional to 20,805,367.70, 31,208,051.55 and 20,506,769.30 is: 30,760,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805,367.70 : 31,208,051.55 = 20,506,769.30 : x
  2. Step 2: Convert to fraction form
    20,805,367.70/31,208,051.55 = 20,506,769.30/x
  3. Step 3: Cross multiply
    20,805,367.70x = 31,208,051.55 × 20,506,769.30
  4. Step 4: Simplify right side
    20,805,367.70x = 639,976,313,438,357.50
  5. Step 5: Solve for x
    x = 639,976,313,438,357.50/20,805,367.70
  6. Step 6: Final answer
    x = 30,760,153.95

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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.