Home / 27,631.87-38,132-15,056.62

Finding the Fourth Proportional to 27,631.87, 38,132 and 15,056.62

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Solution

The fourth proportional to 27,631.87, 38,132 and 15,056.62 is: 20,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.87 : 38,132 = 15,056.62 : x
  2. Step 2: Convert to fraction form
    27,631.87/38,132 = 15,056.62/x
  3. Step 3: Cross multiply
    27,631.87x = 38,132 × 15,056.62
  4. Step 4: Simplify right side
    27,631.87x = 574,139,033.84
  5. Step 5: Solve for x
    x = 574,139,033.84/27,631.87
  6. Step 6: Final answer
    x = 20,778.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.