Home / 28,930.12-43,398.38-9,201.76

Finding the Fourth Proportional to 28,930.12, 43,398.38 and 9,201.76

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Solution

The fourth proportional to 28,930.12, 43,398.38 and 9,201.76 is: 13,803.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.12 : 43,398.38 = 9,201.76 : x
  2. Step 2: Convert to fraction form
    28,930.12/43,398.38 = 9,201.76/x
  3. Step 3: Cross multiply
    28,930.12x = 43,398.38 × 9,201.76
  4. Step 4: Simplify right side
    28,930.12x = 399,341,477.15
  5. Step 5: Solve for x
    x = 399,341,477.15/28,930.12
  6. Step 6: Final answer
    x = 13,803.66

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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.