Home / 12,655.90-18,990.66-5,265.46

Finding the Fourth Proportional to 12,655.90, 18,990.66 and 5,265.46

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Solution

The fourth proportional to 12,655.90, 18,990.66 and 5,265.46 is: 7,901.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.90 : 18,990.66 = 5,265.46 : x
  2. Step 2: Convert to fraction form
    12,655.90/18,990.66 = 5,265.46/x
  3. Step 3: Cross multiply
    12,655.90x = 18,990.66 × 5,265.46
  4. Step 4: Simplify right side
    12,655.90x = 99,994,560.60
  5. Step 5: Solve for x
    x = 99,994,560.60/12,655.90
  6. Step 6: Final answer
    x = 7,901.02

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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.