Home / 28,831.04-39,786.72-15,583.04

Finding the Fourth Proportional to 28,831.04, 39,786.72 and 15,583.04

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Solution

The fourth proportional to 28,831.04, 39,786.72 and 15,583.04 is: 21,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.04 : 39,786.72 = 15,583.04 : x
  2. Step 2: Convert to fraction form
    28,831.04/39,786.72 = 15,583.04/x
  3. Step 3: Cross multiply
    28,831.04x = 39,786.72 × 15,583.04
  4. Step 4: Simplify right side
    28,831.04x = 619,998,049.23
  5. Step 5: Solve for x
    x = 619,998,049.23/28,831.04
  6. Step 6: Final answer
    x = 21,504.53

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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.