Home / 18,831.17-25,986.88-10,447.67

Finding the Fourth Proportional to 18,831.17, 25,986.88 and 10,447.67

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Solution

The fourth proportional to 18,831.17, 25,986.88 and 10,447.67 is: 14,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.17 : 25,986.88 = 10,447.67 : x
  2. Step 2: Convert to fraction form
    18,831.17/25,986.88 = 10,447.67/x
  3. Step 3: Cross multiply
    18,831.17x = 25,986.88 × 10,447.67
  4. Step 4: Simplify right side
    18,831.17x = 271,502,346.57
  5. Step 5: Solve for x
    x = 271,502,346.57/18,831.17
  6. Step 6: Final answer
    x = 14,417.71

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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.