Home / 15,183.92-20,953.59-8,470.01

Finding the Fourth Proportional to 15,183.92, 20,953.59 and 8,470.01

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Solution

The fourth proportional to 15,183.92, 20,953.59 and 8,470.01 is: 11,688.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.92 : 20,953.59 = 8,470.01 : x
  2. Step 2: Convert to fraction form
    15,183.92/20,953.59 = 8,470.01/x
  3. Step 3: Cross multiply
    15,183.92x = 20,953.59 × 8,470.01
  4. Step 4: Simplify right side
    15,183.92x = 177,477,116.84
  5. Step 5: Solve for x
    x = 177,477,116.84/15,183.92
  6. Step 6: Final answer
    x = 11,688.49

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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.