Home / 13,731.88-20,598.90-5,411.32

Finding the Fourth Proportional to 13,731.88, 20,598.90 and 5,411.32

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Solution

The fourth proportional to 13,731.88, 20,598.90 and 5,411.32 is: 8,117.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.88 : 20,598.90 = 5,411.32 : x
  2. Step 2: Convert to fraction form
    13,731.88/20,598.90 = 5,411.32/x
  3. Step 3: Cross multiply
    13,731.88x = 20,598.90 × 5,411.32
  4. Step 4: Simplify right side
    13,731.88x = 111,467,239.55
  5. Step 5: Solve for x
    x = 111,467,239.55/13,731.88
  6. Step 6: Final answer
    x = 8,117.41

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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.