Home / 20,806,499.70-31,209,749.55-10,189,667.70

Finding the Fourth Proportional to 20,806,499.70, 31,209,749.55 and 10,189,667.70

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Solution

The fourth proportional to 20,806,499.70, 31,209,749.55 and 10,189,667.70 is: 15,284,501.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,499.70 : 31,209,749.55 = 10,189,667.70 : x
  2. Step 2: Convert to fraction form
    20,806,499.70/31,209,749.55 = 10,189,667.70/x
  3. Step 3: Cross multiply
    20,806,499.70x = 31,209,749.55 × 10,189,667.70
  4. Step 4: Simplify right side
    20,806,499.70x = 318,016,976,914,724.50
  5. Step 5: Solve for x
    x = 318,016,976,914,724.50/20,806,499.70
  6. Step 6: Final answer
    x = 15,284,501.55

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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.