Home / 42,516.78-63,758.76-20,324.21

Finding the Fourth Proportional to 42,516.78, 63,758.76 and 20,324.21

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Solution

The fourth proportional to 42,516.78, 63,758.76 and 20,324.21 is: 30,478.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,516.78 : 63,758.76 = 20,324.21 : x
  2. Step 2: Convert to fraction form
    42,516.78/63,758.76 = 20,324.21/x
  3. Step 3: Cross multiply
    42,516.78x = 63,758.76 × 20,324.21
  4. Step 4: Simplify right side
    42,516.78x = 1,295,846,108.79
  5. Step 5: Solve for x
    x = 1,295,846,108.79/42,516.78
  6. Step 6: Final answer
    x = 30,478.46

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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.