Home / 28,292.18-42,360.24-18,919.22

Finding the Fourth Proportional to 28,292.18, 42,360.24 and 18,919.22

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Solution

The fourth proportional to 28,292.18, 42,360.24 and 18,919.22 is: 28,326.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.18 : 42,360.24 = 18,919.22 : x
  2. Step 2: Convert to fraction form
    28,292.18/42,360.24 = 18,919.22/x
  3. Step 3: Cross multiply
    28,292.18x = 42,360.24 × 18,919.22
  4. Step 4: Simplify right side
    28,292.18x = 801,422,699.81
  5. Step 5: Solve for x
    x = 801,422,699.81/28,292.18
  6. Step 6: Final answer
    x = 28,326.65

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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.