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Finding the Fourth Proportional to 55,897.72, 83,845.83 and 13,778.30

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Solution

The fourth proportional to 55,897.72, 83,845.83 and 13,778.30 is: 20,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,897.72 : 83,845.83 = 13,778.30 : x
  2. Step 2: Convert to fraction form
    55,897.72/83,845.83 = 13,778.30/x
  3. Step 3: Cross multiply
    55,897.72x = 83,845.83 × 13,778.30
  4. Step 4: Simplify right side
    55,897.72x = 1,155,252,999.49
  5. Step 5: Solve for x
    x = 1,155,252,999.49/55,897.72
  6. Step 6: Final answer
    x = 20,667.27

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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.