Home / 28,631.27-42,919.54-12,827.43

Finding the Fourth Proportional to 28,631.27, 42,919.54 and 12,827.43

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Solution

The fourth proportional to 28,631.27, 42,919.54 and 12,827.43 is: 19,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.27 : 42,919.54 = 12,827.43 : x
  2. Step 2: Convert to fraction form
    28,631.27/42,919.54 = 12,827.43/x
  3. Step 3: Cross multiply
    28,631.27x = 42,919.54 × 12,827.43
  4. Step 4: Simplify right side
    28,631.27x = 550,547,362.91
  5. Step 5: Solve for x
    x = 550,547,362.91/28,631.27
  6. Step 6: Final answer
    x = 19,228.88

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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.