Home / 22,390.22-30,898.50-12,318.44

Finding the Fourth Proportional to 22,390.22, 30,898.50 and 12,318.44

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Solution

The fourth proportional to 22,390.22, 30,898.50 and 12,318.44 is: 16,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.22 : 30,898.50 = 12,318.44 : x
  2. Step 2: Convert to fraction form
    22,390.22/30,898.50 = 12,318.44/x
  3. Step 3: Cross multiply
    22,390.22x = 30,898.50 × 12,318.44
  4. Step 4: Simplify right side
    22,390.22x = 380,621,318.34
  5. Step 5: Solve for x
    x = 380,621,318.34/22,390.22
  6. Step 6: Final answer
    x = 16,999.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.