Home / 20,460.48-30,683.20-7,309.28

Finding the Fourth Proportional to 20,460.48, 30,683.20 and 7,309.28

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Solution

The fourth proportional to 20,460.48, 30,683.20 and 7,309.28 is: 10,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.48 : 30,683.20 = 7,309.28 : x
  2. Step 2: Convert to fraction form
    20,460.48/30,683.20 = 7,309.28/x
  3. Step 3: Cross multiply
    20,460.48x = 30,683.20 × 7,309.28
  4. Step 4: Simplify right side
    20,460.48x = 224,272,100.10
  5. Step 5: Solve for x
    x = 224,272,100.10/20,460.48
  6. Step 6: Final answer
    x = 10,961.23

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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.