Home / 31,243.36-43,133.66-20,663.68

Finding the Fourth Proportional to 31,243.36, 43,133.66 and 20,663.68

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Solution

The fourth proportional to 31,243.36, 43,133.66 and 20,663.68 is: 28,527.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,243.36 : 43,133.66 = 20,663.68 : x
  2. Step 2: Convert to fraction form
    31,243.36/43,133.66 = 20,663.68/x
  3. Step 3: Cross multiply
    31,243.36x = 43,133.66 × 20,663.68
  4. Step 4: Simplify right side
    31,243.36x = 891,300,147.47
  5. Step 5: Solve for x
    x = 891,300,147.47/31,243.36
  6. Step 6: Final answer
    x = 28,527.67

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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.