Home / 20,768.64-31,152.96-7,616.04

Finding the Fourth Proportional to 20,768.64, 31,152.96 and 7,616.04

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Solution

The fourth proportional to 20,768.64, 31,152.96 and 7,616.04 is: 11,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.64 : 31,152.96 = 7,616.04 : x
  2. Step 2: Convert to fraction form
    20,768.64/31,152.96 = 7,616.04/x
  3. Step 3: Cross multiply
    20,768.64x = 31,152.96 × 7,616.04
  4. Step 4: Simplify right side
    20,768.64x = 237,262,189.48
  5. Step 5: Solve for x
    x = 237,262,189.48/20,768.64
  6. Step 6: Final answer
    x = 11,424.06

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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.