Home / 13,163.63-18,165.80-7,577.87

Finding the Fourth Proportional to 13,163.63, 18,165.80 and 7,577.87

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Solution

The fourth proportional to 13,163.63, 18,165.80 and 7,577.87 is: 10,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.63 : 18,165.80 = 7,577.87 : x
  2. Step 2: Convert to fraction form
    13,163.63/18,165.80 = 7,577.87/x
  3. Step 3: Cross multiply
    13,163.63x = 18,165.80 × 7,577.87
  4. Step 4: Simplify right side
    13,163.63x = 137,657,998.96
  5. Step 5: Solve for x
    x = 137,657,998.96/13,163.63
  6. Step 6: Final answer
    x = 10,457.45

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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.