Home / 20,300.40-30,429.84-11,516.76

Finding the Fourth Proportional to 20,300.40, 30,429.84 and 11,516.76

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Solution

The fourth proportional to 20,300.40, 30,429.84 and 11,516.76 is: 17,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.40 : 30,429.84 = 11,516.76 : x
  2. Step 2: Convert to fraction form
    20,300.40/30,429.84 = 11,516.76/x
  3. Step 3: Cross multiply
    20,300.40x = 30,429.84 × 11,516.76
  4. Step 4: Simplify right side
    20,300.40x = 350,453,164.12
  5. Step 5: Solve for x
    x = 350,453,164.12/20,300.40
  6. Step 6: Final answer
    x = 17,263.36

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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.