Home / 15,831.32-21,847.13-8,757.59

Finding the Fourth Proportional to 15,831.32, 21,847.13 and 8,757.59

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Solution

The fourth proportional to 15,831.32, 21,847.13 and 8,757.59 is: 12,085.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.32 : 21,847.13 = 8,757.59 : x
  2. Step 2: Convert to fraction form
    15,831.32/21,847.13 = 8,757.59/x
  3. Step 3: Cross multiply
    15,831.32x = 21,847.13 × 8,757.59
  4. Step 4: Simplify right side
    15,831.32x = 191,328,207.22
  5. Step 5: Solve for x
    x = 191,328,207.22/15,831.32
  6. Step 6: Final answer
    x = 12,085.42

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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.