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Finding the Fourth Proportional to 51,228.77, 76,843.16 and 13,788.93

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Solution

The fourth proportional to 51,228.77, 76,843.16 and 13,788.93 is: 20,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,228.77 : 76,843.16 = 13,788.93 : x
  2. Step 2: Convert to fraction form
    51,228.77/76,843.16 = 13,788.93/x
  3. Step 3: Cross multiply
    51,228.77x = 76,843.16 × 13,788.93
  4. Step 4: Simplify right side
    51,228.77x = 1,059,584,885.27
  5. Step 5: Solve for x
    x = 1,059,584,885.27/51,228.77
  6. Step 6: Final answer
    x = 20,683.40

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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.