Home / 28,197.06-38,894.34-18,138.61

Finding the Fourth Proportional to 28,197.06, 38,894.34 and 18,138.61

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Solution

The fourth proportional to 28,197.06, 38,894.34 and 18,138.61 is: 25,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.06 : 38,894.34 = 18,138.61 : x
  2. Step 2: Convert to fraction form
    28,197.06/38,894.34 = 18,138.61/x
  3. Step 3: Cross multiply
    28,197.06x = 38,894.34 × 18,138.61
  4. Step 4: Simplify right side
    28,197.06x = 705,489,264.47
  5. Step 5: Solve for x
    x = 705,489,264.47/28,197.06
  6. Step 6: Final answer
    x = 25,019.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.