Home / 22,259.58-30,720.15-12,831.18

Finding the Fourth Proportional to 22,259.58, 30,720.15 and 12,831.18

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Solution

The fourth proportional to 22,259.58, 30,720.15 and 12,831.18 is: 17,708.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,259.58 : 30,720.15 = 12,831.18 : x
  2. Step 2: Convert to fraction form
    22,259.58/30,720.15 = 12,831.18/x
  3. Step 3: Cross multiply
    22,259.58x = 30,720.15 × 12,831.18
  4. Step 4: Simplify right side
    22,259.58x = 394,175,774.28
  5. Step 5: Solve for x
    x = 394,175,774.28/22,259.58
  6. Step 6: Final answer
    x = 17,708.14

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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.