Home / 18,121.26-25,007.40-10,572.80

Finding the Fourth Proportional to 18,121.26, 25,007.40 and 10,572.80

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Solution

The fourth proportional to 18,121.26, 25,007.40 and 10,572.80 is: 14,590.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.26 : 25,007.40 = 10,572.80 : x
  2. Step 2: Convert to fraction form
    18,121.26/25,007.40 = 10,572.80/x
  3. Step 3: Cross multiply
    18,121.26x = 25,007.40 × 10,572.80
  4. Step 4: Simplify right side
    18,121.26x = 264,398,238.72
  5. Step 5: Solve for x
    x = 264,398,238.72/18,121.26
  6. Step 6: Final answer
    x = 14,590.50

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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.