Home / 15,831.48-21,847.60-8,758.04

Finding the Fourth Proportional to 15,831.48, 21,847.60 and 8,758.04

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Solution

The fourth proportional to 15,831.48, 21,847.60 and 8,758.04 is: 12,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.48 : 21,847.60 = 8,758.04 : x
  2. Step 2: Convert to fraction form
    15,831.48/21,847.60 = 8,758.04/x
  3. Step 3: Cross multiply
    15,831.48x = 21,847.60 × 8,758.04
  4. Step 4: Simplify right side
    15,831.48x = 191,342,154.70
  5. Step 5: Solve for x
    x = 191,342,154.70/15,831.48
  6. Step 6: Final answer
    x = 12,086.18

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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.