Home / 31,577.05-43,583.64-20,823.86

Finding the Fourth Proportional to 31,577.05, 43,583.64 and 20,823.86

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Solution

The fourth proportional to 31,577.05, 43,583.64 and 20,823.86 is: 28,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,577.05 : 43,583.64 = 20,823.86 : x
  2. Step 2: Convert to fraction form
    31,577.05/43,583.64 = 20,823.86/x
  3. Step 3: Cross multiply
    31,577.05x = 43,583.64 × 20,823.86
  4. Step 4: Simplify right side
    31,577.05x = 907,579,508.69
  5. Step 5: Solve for x
    x = 907,579,508.69/31,577.05
  6. Step 6: Final answer
    x = 28,741.74

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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.