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Finding the Fourth Proportional to 13,577.77, 18,737.86 and 7,609.39

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Solution

The fourth proportional to 13,577.77, 18,737.86 and 7,609.39 is: 10,501.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.77 : 18,737.86 = 7,609.39 : x
  2. Step 2: Convert to fraction form
    13,577.77/18,737.86 = 7,609.39/x
  3. Step 3: Cross multiply
    13,577.77x = 18,737.86 × 7,609.39
  4. Step 4: Simplify right side
    13,577.77x = 142,583,618.64
  5. Step 5: Solve for x
    x = 142,583,618.64/13,577.77
  6. Step 6: Final answer
    x = 10,501.26

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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.