Home / 28,807.08-43,181.91-12,171.30

Finding the Fourth Proportional to 28,807.08, 43,181.91 and 12,171.30

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Solution

The fourth proportional to 28,807.08, 43,181.91 and 12,171.30 is: 18,244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.08 : 43,181.91 = 12,171.30 : x
  2. Step 2: Convert to fraction form
    28,807.08/43,181.91 = 12,171.30/x
  3. Step 3: Cross multiply
    28,807.08x = 43,181.91 × 12,171.30
  4. Step 4: Simplify right side
    28,807.08x = 525,579,981.18
  5. Step 5: Solve for x
    x = 525,579,981.18/28,807.08
  6. Step 6: Final answer
    x = 18,244.82

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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.