Home / 18,121.83-25,010.47-10,166.61

Finding the Fourth Proportional to 18,121.83, 25,010.47 and 10,166.61

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Solution

The fourth proportional to 18,121.83, 25,010.47 and 10,166.61 is: 14,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.83 : 25,010.47 = 10,166.61 : x
  2. Step 2: Convert to fraction form
    18,121.83/25,010.47 = 10,166.61/x
  3. Step 3: Cross multiply
    18,121.83x = 25,010.47 × 10,166.61
  4. Step 4: Simplify right side
    18,121.83x = 254,271,800.90
  5. Step 5: Solve for x
    x = 254,271,800.90/18,121.83
  6. Step 6: Final answer
    x = 14,031.25

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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.