Home / 15,831.18-21,842.33-9,116.64

Finding the Fourth Proportional to 15,831.18, 21,842.33 and 9,116.64

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Solution

The fourth proportional to 15,831.18, 21,842.33 and 9,116.64 is: 12,578.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.18 : 21,842.33 = 9,116.64 : x
  2. Step 2: Convert to fraction form
    15,831.18/21,842.33 = 9,116.64/x
  3. Step 3: Cross multiply
    15,831.18x = 21,842.33 × 9,116.64
  4. Step 4: Simplify right side
    15,831.18x = 199,128,659.37
  5. Step 5: Solve for x
    x = 199,128,659.37/15,831.18
  6. Step 6: Final answer
    x = 12,578.26

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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.