Home / 40,290.24-60,427.80-13,989.60

Finding the Fourth Proportional to 40,290.24, 60,427.80 and 13,989.60

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Solution

The fourth proportional to 40,290.24, 60,427.80 and 13,989.60 is: 20,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,290.24 : 60,427.80 = 13,989.60 : x
  2. Step 2: Convert to fraction form
    40,290.24/60,427.80 = 13,989.60/x
  3. Step 3: Cross multiply
    40,290.24x = 60,427.80 × 13,989.60
  4. Step 4: Simplify right side
    40,290.24x = 845,360,750.88
  5. Step 5: Solve for x
    x = 845,360,750.88/40,290.24
  6. Step 6: Final answer
    x = 20,981.78

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1.5x scale

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.