Home / 20,420.48-30,623.16-7,269.32

Finding the Fourth Proportional to 20,420.48, 30,623.16 and 7,269.32

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Solution

The fourth proportional to 20,420.48, 30,623.16 and 7,269.32 is: 10,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.48 : 30,623.16 = 7,269.32 : x
  2. Step 2: Convert to fraction form
    20,420.48/30,623.16 = 7,269.32/x
  3. Step 3: Cross multiply
    20,420.48x = 30,623.16 × 7,269.32
  4. Step 4: Simplify right side
    20,420.48x = 222,609,549.45
  5. Step 5: Solve for x
    x = 222,609,549.45/20,420.48
  6. Step 6: Final answer
    x = 10,901.29

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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.