Home / 20,083.20-30,136.32-15,688.32

Finding the Fourth Proportional to 20,083.20, 30,136.32 and 15,688.32

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Solution

The fourth proportional to 20,083.20, 30,136.32 and 15,688.32 is: 23,541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.20 : 30,136.32 = 15,688.32 : x
  2. Step 2: Convert to fraction form
    20,083.20/30,136.32 = 15,688.32/x
  3. Step 3: Cross multiply
    20,083.20x = 30,136.32 × 15,688.32
  4. Step 4: Simplify right side
    20,083.20x = 472,788,231.78
  5. Step 5: Solve for x
    x = 472,788,231.78/20,083.20
  6. Step 6: Final answer
    x = 23,541.48

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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.