Home / 18,423.72-25,409.09-15,566.45

Finding the Fourth Proportional to 18,423.72, 25,409.09 and 15,566.45

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Solution

The fourth proportional to 18,423.72, 25,409.09 and 15,566.45 is: 21,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.72 : 25,409.09 = 15,566.45 : x
  2. Step 2: Convert to fraction form
    18,423.72/25,409.09 = 15,566.45/x
  3. Step 3: Cross multiply
    18,423.72x = 25,409.09 × 15,566.45
  4. Step 4: Simplify right side
    18,423.72x = 395,529,240.90
  5. Step 5: Solve for x
    x = 395,529,240.90/18,423.72
  6. Step 6: Final answer
    x = 21,468.48

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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.