Home / 18,865.81-28,293.65-8,985.43

Finding the Fourth Proportional to 18,865.81, 28,293.65 and 8,985.43

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Solution

The fourth proportional to 18,865.81, 28,293.65 and 8,985.43 is: 13,475.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.81 : 28,293.65 = 8,985.43 : x
  2. Step 2: Convert to fraction form
    18,865.81/28,293.65 = 8,985.43/x
  3. Step 3: Cross multiply
    18,865.81x = 28,293.65 × 8,985.43
  4. Step 4: Simplify right side
    18,865.81x = 254,230,611.52
  5. Step 5: Solve for x
    x = 254,230,611.52/18,865.81
  6. Step 6: Final answer
    x = 13,475.73

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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.