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Finding the Fourth Proportional to 13,637.60, 20,451.60 and 4,400.48

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Solution

The fourth proportional to 13,637.60, 20,451.60 and 4,400.48 is: 6,599.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.60 : 20,451.60 = 4,400.48 : x
  2. Step 2: Convert to fraction form
    13,637.60/20,451.60 = 4,400.48/x
  3. Step 3: Cross multiply
    13,637.60x = 20,451.60 × 4,400.48
  4. Step 4: Simplify right side
    13,637.60x = 89,996,856.77
  5. Step 5: Solve for x
    x = 89,996,856.77/13,637.60
  6. Step 6: Final answer
    x = 6,599.17

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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.