Home / 15,003.80-22,505.70-5,139.80

Finding the Fourth Proportional to 15,003.80, 22,505.70 and 5,139.80

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Solution

The fourth proportional to 15,003.80, 22,505.70 and 5,139.80 is: 7,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.80 : 22,505.70 = 5,139.80 : x
  2. Step 2: Convert to fraction form
    15,003.80/22,505.70 = 5,139.80/x
  3. Step 3: Cross multiply
    15,003.80x = 22,505.70 × 5,139.80
  4. Step 4: Simplify right side
    15,003.80x = 115,674,796.86
  5. Step 5: Solve for x
    x = 115,674,796.86/15,003.80
  6. Step 6: Final answer
    x = 7,709.70

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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.