Home / 20,274.23-30,430.78-11,516.51

Finding the Fourth Proportional to 20,274.23, 30,430.78 and 11,516.51

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Solution

The fourth proportional to 20,274.23, 30,430.78 and 11,516.51 is: 17,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.23 : 30,430.78 = 11,516.51 : x
  2. Step 2: Convert to fraction form
    20,274.23/30,430.78 = 11,516.51/x
  3. Step 3: Cross multiply
    20,274.23x = 30,430.78 × 11,516.51
  4. Step 4: Simplify right side
    20,274.23x = 350,456,429.46
  5. Step 5: Solve for x
    x = 350,456,429.46/20,274.23
  6. Step 6: Final answer
    x = 17,285.80

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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.