Home / 13,893.75-20,838.60-5,127.12

Finding the Fourth Proportional to 13,893.75, 20,838.60 and 5,127.12

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Solution

The fourth proportional to 13,893.75, 20,838.60 and 5,127.12 is: 7,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.75 : 20,838.60 = 5,127.12 : x
  2. Step 2: Convert to fraction form
    13,893.75/20,838.60 = 5,127.12/x
  3. Step 3: Cross multiply
    13,893.75x = 20,838.60 × 5,127.12
  4. Step 4: Simplify right side
    13,893.75x = 106,842,002.83
  5. Step 5: Solve for x
    x = 106,842,002.83/13,893.75
  6. Step 6: Final answer
    x = 7,689.93

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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.