Home / 42,516.05-63,775.13-20,331.77

Finding the Fourth Proportional to 42,516.05, 63,775.13 and 20,331.77

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Solution

The fourth proportional to 42,516.05, 63,775.13 and 20,331.77 is: 30,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,516.05 : 63,775.13 = 20,331.77 : x
  2. Step 2: Convert to fraction form
    42,516.05/63,775.13 = 20,331.77/x
  3. Step 3: Cross multiply
    42,516.05x = 63,775.13 × 20,331.77
  4. Step 4: Simplify right side
    42,516.05x = 1,296,661,173.22
  5. Step 5: Solve for x
    x = 1,296,661,173.22/42,516.05
  6. Step 6: Final answer
    x = 30,498.16

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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.