Home / 15,446.87-21,315.83-8,732.07

Finding the Fourth Proportional to 15,446.87, 21,315.83 and 8,732.07

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Solution

The fourth proportional to 15,446.87, 21,315.83 and 8,732.07 is: 12,049.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.87 : 21,315.83 = 8,732.07 : x
  2. Step 2: Convert to fraction form
    15,446.87/21,315.83 = 8,732.07/x
  3. Step 3: Cross multiply
    15,446.87x = 21,315.83 × 8,732.07
  4. Step 4: Simplify right side
    15,446.87x = 186,131,276.01
  5. Step 5: Solve for x
    x = 186,131,276.01/15,446.87
  6. Step 6: Final answer
    x = 12,049.77

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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.