Home / 20,285.24-30,407.32-9,739.76

Finding the Fourth Proportional to 20,285.24, 30,407.32 and 9,739.76

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Solution

The fourth proportional to 20,285.24, 30,407.32 and 9,739.76 is: 14,599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.24 : 30,407.32 = 9,739.76 : x
  2. Step 2: Convert to fraction form
    20,285.24/30,407.32 = 9,739.76/x
  3. Step 3: Cross multiply
    20,285.24x = 30,407.32 × 9,739.76
  4. Step 4: Simplify right side
    20,285.24x = 296,159,999.04
  5. Step 5: Solve for x
    x = 296,159,999.04/20,285.24
  6. Step 6: Final answer
    x = 14,599.78

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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.