Home / 13,577.87-18,737.46-8,272.71

Finding the Fourth Proportional to 13,577.87, 18,737.46 and 8,272.71

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Solution

The fourth proportional to 13,577.87, 18,737.46 and 8,272.71 is: 11,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.87 : 18,737.46 = 8,272.71 : x
  2. Step 2: Convert to fraction form
    13,577.87/18,737.46 = 8,272.71/x
  3. Step 3: Cross multiply
    13,577.87x = 18,737.46 × 8,272.71
  4. Step 4: Simplify right side
    13,577.87x = 155,009,572.72
  5. Step 5: Solve for x
    x = 155,009,572.72/13,577.87
  6. Step 6: Final answer
    x = 11,416.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.