Home / 20,903.67-28,845.18-12,404.34

Finding the Fourth Proportional to 20,903.67, 28,845.18 and 12,404.34

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Solution

The fourth proportional to 20,903.67, 28,845.18 and 12,404.34 is: 17,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.67 : 28,845.18 = 12,404.34 : x
  2. Step 2: Convert to fraction form
    20,903.67/28,845.18 = 12,404.34/x
  3. Step 3: Cross multiply
    20,903.67x = 28,845.18 × 12,404.34
  4. Step 4: Simplify right side
    20,903.67x = 357,805,420.08
  5. Step 5: Solve for x
    x = 357,805,420.08/20,903.67
  6. Step 6: Final answer
    x = 17,116.87

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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.