Home / 20,903.04-31,346.78-8,418.86

Finding the Fourth Proportional to 20,903.04, 31,346.78 and 8,418.86

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Solution

The fourth proportional to 20,903.04, 31,346.78 and 8,418.86 is: 12,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.04 : 31,346.78 = 8,418.86 : x
  2. Step 2: Convert to fraction form
    20,903.04/31,346.78 = 8,418.86/x
  3. Step 3: Cross multiply
    20,903.04x = 31,346.78 × 8,418.86
  4. Step 4: Simplify right side
    20,903.04x = 263,904,152.27
  5. Step 5: Solve for x
    x = 263,904,152.27/20,903.04
  6. Step 6: Final answer
    x = 12,625.16

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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.