Home / 28,201.58-38,900.54-18,143.12

Finding the Fourth Proportional to 28,201.58, 38,900.54 and 18,143.12

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Solution

The fourth proportional to 28,201.58, 38,900.54 and 18,143.12 is: 25,026.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.58 : 38,900.54 = 18,143.12 : x
  2. Step 2: Convert to fraction form
    28,201.58/38,900.54 = 18,143.12/x
  3. Step 3: Cross multiply
    28,201.58x = 38,900.54 × 18,143.12
  4. Step 4: Simplify right side
    28,201.58x = 705,777,165.28
  5. Step 5: Solve for x
    x = 705,777,165.28/28,201.58
  6. Step 6: Final answer
    x = 25,026.16

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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.