Home / 20,436.96-28,204.30-11,363.34

Finding the Fourth Proportional to 20,436.96, 28,204.30 and 11,363.34

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Solution

The fourth proportional to 20,436.96, 28,204.30 and 11,363.34 is: 15,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.96 : 28,204.30 = 11,363.34 : x
  2. Step 2: Convert to fraction form
    20,436.96/28,204.30 = 11,363.34/x
  3. Step 3: Cross multiply
    20,436.96x = 28,204.30 × 11,363.34
  4. Step 4: Simplify right side
    20,436.96x = 320,495,050.36
  5. Step 5: Solve for x
    x = 320,495,050.36/20,436.96
  6. Step 6: Final answer
    x = 15,682.13

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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.