Home / 18,718.41-25,831.50-10,220.71

Finding the Fourth Proportional to 18,718.41, 25,831.50 and 10,220.71

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Solution

The fourth proportional to 18,718.41, 25,831.50 and 10,220.71 is: 14,104.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.41 : 25,831.50 = 10,220.71 : x
  2. Step 2: Convert to fraction form
    18,718.41/25,831.50 = 10,220.71/x
  3. Step 3: Cross multiply
    18,718.41x = 25,831.50 × 10,220.71
  4. Step 4: Simplify right side
    18,718.41x = 264,016,090.10
  5. Step 5: Solve for x
    x = 264,016,090.10/18,718.41
  6. Step 6: Final answer
    x = 14,104.62

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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.