Home / 28,161.12-42,238.44-7,386.24

Finding the Fourth Proportional to 28,161.12, 42,238.44 and 7,386.24

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Solution

The fourth proportional to 28,161.12, 42,238.44 and 7,386.24 is: 11,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.12 : 42,238.44 = 7,386.24 : x
  2. Step 2: Convert to fraction form
    28,161.12/42,238.44 = 7,386.24/x
  3. Step 3: Cross multiply
    28,161.12x = 42,238.44 × 7,386.24
  4. Step 4: Simplify right side
    28,161.12x = 311,983,255.07
  5. Step 5: Solve for x
    x = 311,983,255.07/28,161.12
  6. Step 6: Final answer
    x = 11,078.51

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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.