Home / 25,728.44-38,574.43-9,920.07

Finding the Fourth Proportional to 25,728.44, 38,574.43 and 9,920.07

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Solution

The fourth proportional to 25,728.44, 38,574.43 and 9,920.07 is: 14,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.44 : 38,574.43 = 9,920.07 : x
  2. Step 2: Convert to fraction form
    25,728.44/38,574.43 = 9,920.07/x
  3. Step 3: Cross multiply
    25,728.44x = 38,574.43 × 9,920.07
  4. Step 4: Simplify right side
    25,728.44x = 382,661,021.01
  5. Step 5: Solve for x
    x = 382,661,021.01/25,728.44
  6. Step 6: Final answer
    x = 14,873.08

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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.