Home / 20,371.89-30,557.86-5,580.94

Finding the Fourth Proportional to 20,371.89, 30,557.86 and 5,580.94

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Solution

The fourth proportional to 20,371.89, 30,557.86 and 5,580.94 is: 8,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.89 : 30,557.86 = 5,580.94 : x
  2. Step 2: Convert to fraction form
    20,371.89/30,557.86 = 5,580.94/x
  3. Step 3: Cross multiply
    20,371.89x = 30,557.86 × 5,580.94
  4. Step 4: Simplify right side
    20,371.89x = 170,541,492.84
  5. Step 5: Solve for x
    x = 170,541,492.84/20,371.89
  6. Step 6: Final answer
    x = 8,371.41

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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.