Home / 20,235,515.35-30,353,273.03-13,778,507.20

Finding the Fourth Proportional to 20,235,515.35, 30,353,273.03 and 13,778,507.20

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Solution

The fourth proportional to 20,235,515.35, 30,353,273.03 and 13,778,507.20 is: 20,667,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235,515.35 : 30,353,273.03 = 13,778,507.20 : x
  2. Step 2: Convert to fraction form
    20,235,515.35/30,353,273.03 = 13,778,507.20/x
  3. Step 3: Cross multiply
    20,235,515.35x = 30,353,273.03 × 13,778,507.20
  4. Step 4: Simplify right side
    20,235,515.35x = 418,222,790,987,420.81
  5. Step 5: Solve for x
    x = 418,222,790,987,420.81/20,235,515.35
  6. Step 6: Final answer
    x = 20,667,760.80

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1.5x scale

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.