Home / 20,180.32-30,270.47-5,389.31

Finding the Fourth Proportional to 20,180.32, 30,270.47 and 5,389.31

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Solution

The fourth proportional to 20,180.32, 30,270.47 and 5,389.31 is: 8,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.32 : 30,270.47 = 5,389.31 : x
  2. Step 2: Convert to fraction form
    20,180.32/30,270.47 = 5,389.31/x
  3. Step 3: Cross multiply
    20,180.32x = 30,270.47 × 5,389.31
  4. Step 4: Simplify right side
    20,180.32x = 163,136,946.68
  5. Step 5: Solve for x
    x = 163,136,946.68/20,180.32
  6. Step 6: Final answer
    x = 8,083.96

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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.