Home / 15,014.48-20,697.20-9,969.80

Finding the Fourth Proportional to 15,014.48, 20,697.20 and 9,969.80

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Solution

The fourth proportional to 15,014.48, 20,697.20 and 9,969.80 is: 13,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.48 : 20,697.20 = 9,969.80 : x
  2. Step 2: Convert to fraction form
    15,014.48/20,697.20 = 9,969.80/x
  3. Step 3: Cross multiply
    15,014.48x = 20,697.20 × 9,969.80
  4. Step 4: Simplify right side
    15,014.48x = 206,346,944.56
  5. Step 5: Solve for x
    x = 206,346,944.56/15,014.48
  6. Step 6: Final answer
    x = 13,743.20

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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.