Home / 18,631.10-27,946.64-4,780.10

Finding the Fourth Proportional to 18,631.10, 27,946.64 and 4,780.10

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Solution

The fourth proportional to 18,631.10, 27,946.64 and 4,780.10 is: 7,170.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.10 : 27,946.64 = 4,780.10 : x
  2. Step 2: Convert to fraction form
    18,631.10/27,946.64 = 4,780.10/x
  3. Step 3: Cross multiply
    18,631.10x = 27,946.64 × 4,780.10
  4. Step 4: Simplify right side
    18,631.10x = 133,587,733.86
  5. Step 5: Solve for x
    x = 133,587,733.86/18,631.10
  6. Step 6: Final answer
    x = 7,170.15

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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.