Home / 13,831.54-20,696.28-8,288.80

Finding the Fourth Proportional to 13,831.54, 20,696.28 and 8,288.80

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Solution

The fourth proportional to 13,831.54, 20,696.28 and 8,288.80 is: 12,402.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.54 : 20,696.28 = 8,288.80 : x
  2. Step 2: Convert to fraction form
    13,831.54/20,696.28 = 8,288.80/x
  3. Step 3: Cross multiply
    13,831.54x = 20,696.28 × 8,288.80
  4. Step 4: Simplify right side
    13,831.54x = 171,547,325.66
  5. Step 5: Solve for x
    x = 171,547,325.66/13,831.54
  6. Step 6: Final answer
    x = 12,402.62

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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.