Home / 28,109.20-42,163.80-7,332.70

Finding the Fourth Proportional to 28,109.20, 42,163.80 and 7,332.70

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Solution

The fourth proportional to 28,109.20, 42,163.80 and 7,332.70 is: 10,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.20 : 42,163.80 = 7,332.70 : x
  2. Step 2: Convert to fraction form
    28,109.20/42,163.80 = 7,332.70/x
  3. Step 3: Cross multiply
    28,109.20x = 42,163.80 × 7,332.70
  4. Step 4: Simplify right side
    28,109.20x = 309,174,496.26
  5. Step 5: Solve for x
    x = 309,174,496.26/28,109.20
  6. Step 6: Final answer
    x = 10,999.05

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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.