Home / 25,831.12-35,629.98-15,213.28

Finding the Fourth Proportional to 25,831.12, 35,629.98 and 15,213.28

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Solution

The fourth proportional to 25,831.12, 35,629.98 and 15,213.28 is: 20,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,831.12 : 35,629.98 = 15,213.28 : x
  2. Step 2: Convert to fraction form
    25,831.12/35,629.98 = 15,213.28/x
  3. Step 3: Cross multiply
    25,831.12x = 35,629.98 × 15,213.28
  4. Step 4: Simplify right side
    25,831.12x = 542,048,862.13
  5. Step 5: Solve for x
    x = 542,048,862.13/25,831.12
  6. Step 6: Final answer
    x = 20,984.33

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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.