Home / 40,286.24-60,421.80-13,985.60

Finding the Fourth Proportional to 40,286.24, 60,421.80 and 13,985.60

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Solution

The fourth proportional to 40,286.24, 60,421.80 and 13,985.60 is: 20,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,286.24 : 60,421.80 = 13,985.60 : x
  2. Step 2: Convert to fraction form
    40,286.24/60,421.80 = 13,985.60/x
  3. Step 3: Cross multiply
    40,286.24x = 60,421.80 × 13,985.60
  4. Step 4: Simplify right side
    40,286.24x = 845,035,126.08
  5. Step 5: Solve for x
    x = 845,035,126.08/40,286.24
  6. Step 6: Final answer
    x = 20,975.78

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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.