Home / 18,631.74-27,947.58-4,780.74

Finding the Fourth Proportional to 18,631.74, 27,947.58 and 4,780.74

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Solution

The fourth proportional to 18,631.74, 27,947.58 and 4,780.74 is: 7,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.74 : 27,947.58 = 4,780.74 : x
  2. Step 2: Convert to fraction form
    18,631.74/27,947.58 = 4,780.74/x
  3. Step 3: Cross multiply
    18,631.74x = 27,947.58 × 4,780.74
  4. Step 4: Simplify right side
    18,631.74x = 133,610,113.61
  5. Step 5: Solve for x
    x = 133,610,113.61/18,631.74
  6. Step 6: Final answer
    x = 7,171.10

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1.5x scale

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.