Home / 21,265.93-31,905.73-13,884.80

Finding the Fourth Proportional to 21,265.93, 31,905.73 and 13,884.80

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Solution

The fourth proportional to 21,265.93, 31,905.73 and 13,884.80 is: 20,831.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.93 : 31,905.73 = 13,884.80 : x
  2. Step 2: Convert to fraction form
    21,265.93/31,905.73 = 13,884.80/x
  3. Step 3: Cross multiply
    21,265.93x = 31,905.73 × 13,884.80
  4. Step 4: Simplify right side
    21,265.93x = 443,004,717.20
  5. Step 5: Solve for x
    x = 443,004,717.20/21,265.93
  6. Step 6: Final answer
    x = 20,831.67

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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.