Home / 20,560.11-30,881.62-12,256.34

Finding the Fourth Proportional to 20,560.11, 30,881.62 and 12,256.34

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Solution

The fourth proportional to 20,560.11, 30,881.62 and 12,256.34 is: 18,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.11 : 30,881.62 = 12,256.34 : x
  2. Step 2: Convert to fraction form
    20,560.11/30,881.62 = 12,256.34/x
  3. Step 3: Cross multiply
    20,560.11x = 30,881.62 × 12,256.34
  4. Step 4: Simplify right side
    20,560.11x = 378,495,573.19
  5. Step 5: Solve for x
    x = 378,495,573.19/20,560.11
  6. Step 6: Final answer
    x = 18,409.22

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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.