Home / 28,078.15-42,117.13-11,434.48

Finding the Fourth Proportional to 28,078.15, 42,117.13 and 11,434.48

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Solution

The fourth proportional to 28,078.15, 42,117.13 and 11,434.48 is: 17,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.15 : 42,117.13 = 11,434.48 : x
  2. Step 2: Convert to fraction form
    28,078.15/42,117.13 = 11,434.48/x
  3. Step 3: Cross multiply
    28,078.15x = 42,117.13 × 11,434.48
  4. Step 4: Simplify right side
    28,078.15x = 481,587,480.64
  5. Step 5: Solve for x
    x = 481,587,480.64/28,078.15
  6. Step 6: Final answer
    x = 17,151.68

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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.