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Finding the Fourth Proportional to 18,582.72, 25,649.07 and 11,505.12

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Solution

The fourth proportional to 18,582.72, 25,649.07 and 11,505.12 is: 15,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,582.72 : 25,649.07 = 11,505.12 : x
  2. Step 2: Convert to fraction form
    18,582.72/25,649.07 = 11,505.12/x
  3. Step 3: Cross multiply
    18,582.72x = 25,649.07 × 11,505.12
  4. Step 4: Simplify right side
    18,582.72x = 295,095,628.24
  5. Step 5: Solve for x
    x = 295,095,628.24/18,582.72
  6. Step 6: Final answer
    x = 15,880.11

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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.