Home / 13,988.76-20,983.34-5,557.36

Finding the Fourth Proportional to 13,988.76, 20,983.34 and 5,557.36

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Solution

The fourth proportional to 13,988.76, 20,983.34 and 5,557.36 is: 8,336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.76 : 20,983.34 = 5,557.36 : x
  2. Step 2: Convert to fraction form
    13,988.76/20,983.34 = 5,557.36/x
  3. Step 3: Cross multiply
    13,988.76x = 20,983.34 × 5,557.36
  4. Step 4: Simplify right side
    13,988.76x = 116,611,974.38
  5. Step 5: Solve for x
    x = 116,611,974.38/13,988.76
  6. Step 6: Final answer
    x = 8,336.12

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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.