Home / 13,438,305.70-20,157,458.55-7,769,601.70

Finding the Fourth Proportional to 13,438,305.70, 20,157,458.55 and 7,769,601.70

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Solution

The fourth proportional to 13,438,305.70, 20,157,458.55 and 7,769,601.70 is: 11,654,402.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438,305.70 : 20,157,458.55 = 7,769,601.70 : x
  2. Step 2: Convert to fraction form
    13,438,305.70/20,157,458.55 = 7,769,601.70/x
  3. Step 3: Cross multiply
    13,438,305.70x = 20,157,458.55 × 7,769,601.70
  4. Step 4: Simplify right side
    13,438,305.70x = 156,615,424,217,759.53
  5. Step 5: Solve for x
    x = 156,615,424,217,759.53/13,438,305.70
  6. Step 6: Final answer
    x = 11,654,402.55

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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.