Home / 28,186.10-42,285.62-8,465.02

Finding the Fourth Proportional to 28,186.10, 42,285.62 and 8,465.02

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Solution

The fourth proportional to 28,186.10, 42,285.62 and 8,465.02 is: 12,699.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.10 : 42,285.62 = 8,465.02 : x
  2. Step 2: Convert to fraction form
    28,186.10/42,285.62 = 8,465.02/x
  3. Step 3: Cross multiply
    28,186.10x = 42,285.62 × 8,465.02
  4. Step 4: Simplify right side
    28,186.10x = 357,948,619.01
  5. Step 5: Solve for x
    x = 357,948,619.01/28,186.10
  6. Step 6: Final answer
    x = 12,699.47

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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.