Home / 25,390.32-35,042.49-15,831.75

Finding the Fourth Proportional to 25,390.32, 35,042.49 and 15,831.75

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Solution

The fourth proportional to 25,390.32, 35,042.49 and 15,831.75 is: 21,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.32 : 35,042.49 = 15,831.75 : x
  2. Step 2: Convert to fraction form
    25,390.32/35,042.49 = 15,831.75/x
  3. Step 3: Cross multiply
    25,390.32x = 35,042.49 × 15,831.75
  4. Step 4: Simplify right side
    25,390.32x = 554,783,941.06
  5. Step 5: Solve for x
    x = 554,783,941.06/25,390.32
  6. Step 6: Final answer
    x = 21,850.21

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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.