Home / 10,831.60-16,246.20-8,880.40

Finding the Fourth Proportional to 10,831.60, 16,246.20 and 8,880.40

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Solution

The fourth proportional to 10,831.60, 16,246.20 and 8,880.40 is: 13,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.60 : 16,246.20 = 8,880.40 : x
  2. Step 2: Convert to fraction form
    10,831.60/16,246.20 = 8,880.40/x
  3. Step 3: Cross multiply
    10,831.60x = 16,246.20 × 8,880.40
  4. Step 4: Simplify right side
    10,831.60x = 144,272,754.48
  5. Step 5: Solve for x
    x = 144,272,754.48/10,831.60
  6. Step 6: Final answer
    x = 13,319.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.