Home / 20,328.50-30,492.56-15,889.91

Finding the Fourth Proportional to 20,328.50, 30,492.56 and 15,889.91

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Solution

The fourth proportional to 20,328.50, 30,492.56 and 15,889.91 is: 23,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.50 : 30,492.56 = 15,889.91 : x
  2. Step 2: Convert to fraction form
    20,328.50/30,492.56 = 15,889.91/x
  3. Step 3: Cross multiply
    20,328.50x = 30,492.56 × 15,889.91
  4. Step 4: Simplify right side
    20,328.50x = 484,523,921.33
  5. Step 5: Solve for x
    x = 484,523,921.33/20,328.50
  6. Step 6: Final answer
    x = 23,834.71

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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.