Home / 13,881.45-20,816.10-5,558.70

Finding the Fourth Proportional to 13,881.45, 20,816.10 and 5,558.70

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Solution

The fourth proportional to 13,881.45, 20,816.10 and 5,558.70 is: 8,335.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.45 : 20,816.10 = 5,558.70 : x
  2. Step 2: Convert to fraction form
    13,881.45/20,816.10 = 5,558.70/x
  3. Step 3: Cross multiply
    13,881.45x = 20,816.10 × 5,558.70
  4. Step 4: Simplify right side
    13,881.45x = 115,710,455.07
  5. Step 5: Solve for x
    x = 115,710,455.07/13,881.45
  6. Step 6: Final answer
    x = 8,335.62

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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.