Home / 28,602.19-42,906.17-9,879.76

Finding the Fourth Proportional to 28,602.19, 42,906.17 and 9,879.76

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Solution

The fourth proportional to 28,602.19, 42,906.17 and 9,879.76 is: 14,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.19 : 42,906.17 = 9,879.76 : x
  2. Step 2: Convert to fraction form
    28,602.19/42,906.17 = 9,879.76/x
  3. Step 3: Cross multiply
    28,602.19x = 42,906.17 × 9,879.76
  4. Step 4: Simplify right side
    28,602.19x = 423,902,662.12
  5. Step 5: Solve for x
    x = 423,902,662.12/28,602.19
  6. Step 6: Final answer
    x = 14,820.64

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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.