Home / 13,818.80-20,730.90-5,921.30

Finding the Fourth Proportional to 13,818.80, 20,730.90 and 5,921.30

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Solution

The fourth proportional to 13,818.80, 20,730.90 and 5,921.30 is: 8,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.80 : 20,730.90 = 5,921.30 : x
  2. Step 2: Convert to fraction form
    13,818.80/20,730.90 = 5,921.30/x
  3. Step 3: Cross multiply
    13,818.80x = 20,730.90 × 5,921.30
  4. Step 4: Simplify right side
    13,818.80x = 122,753,878.17
  5. Step 5: Solve for x
    x = 122,753,878.17/13,818.80
  6. Step 6: Final answer
    x = 8,883.11

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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.