Home / 20,652.56-30,979-5,070.32

Finding the Fourth Proportional to 20,652.56, 30,979 and 5,070.32

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Solution

The fourth proportional to 20,652.56, 30,979 and 5,070.32 is: 7,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.56 : 30,979 = 5,070.32 : x
  2. Step 2: Convert to fraction form
    20,652.56/30,979 = 5,070.32/x
  3. Step 3: Cross multiply
    20,652.56x = 30,979 × 5,070.32
  4. Step 4: Simplify right side
    20,652.56x = 157,073,443.28
  5. Step 5: Solve for x
    x = 157,073,443.28/20,652.56
  6. Step 6: Final answer
    x = 7,605.52

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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.