Home / 20,492.76-30,719.70-10,092.36

Finding the Fourth Proportional to 20,492.76, 30,719.70 and 10,092.36

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Solution

The fourth proportional to 20,492.76, 30,719.70 and 10,092.36 is: 15,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.76 : 30,719.70 = 10,092.36 : x
  2. Step 2: Convert to fraction form
    20,492.76/30,719.70 = 10,092.36/x
  3. Step 3: Cross multiply
    20,492.76x = 30,719.70 × 10,092.36
  4. Step 4: Simplify right side
    20,492.76x = 310,034,271.49
  5. Step 5: Solve for x
    x = 310,034,271.49/20,492.76
  6. Step 6: Final answer
    x = 15,128.97

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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.