Home / 25,668.09-38,471.76-12,490.20

Finding the Fourth Proportional to 25,668.09, 38,471.76 and 12,490.20

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Solution

The fourth proportional to 25,668.09, 38,471.76 and 12,490.20 is: 18,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,668.09 : 38,471.76 = 12,490.20 : x
  2. Step 2: Convert to fraction form
    25,668.09/38,471.76 = 12,490.20/x
  3. Step 3: Cross multiply
    25,668.09x = 38,471.76 × 12,490.20
  4. Step 4: Simplify right side
    25,668.09x = 480,519,976.75
  5. Step 5: Solve for x
    x = 480,519,976.75/25,668.09
  6. Step 6: Final answer
    x = 18,720.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.