Home / 20,663.54-30,977.12-8,192.32

Finding the Fourth Proportional to 20,663.54, 30,977.12 and 8,192.32

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Solution

The fourth proportional to 20,663.54, 30,977.12 and 8,192.32 is: 12,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.54 : 30,977.12 = 8,192.32 : x
  2. Step 2: Convert to fraction form
    20,663.54/30,977.12 = 8,192.32/x
  3. Step 3: Cross multiply
    20,663.54x = 30,977.12 × 8,192.32
  4. Step 4: Simplify right side
    20,663.54x = 253,774,538.92
  5. Step 5: Solve for x
    x = 253,774,538.92/20,663.54
  6. Step 6: Final answer
    x = 12,281.27

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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.