Home / 34,731.05-47,927.85-20,390.64

Finding the Fourth Proportional to 34,731.05, 47,927.85 and 20,390.64

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Solution

The fourth proportional to 34,731.05, 47,927.85 and 20,390.64 is: 28,138.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,731.05 : 47,927.85 = 20,390.64 : x
  2. Step 2: Convert to fraction form
    34,731.05/47,927.85 = 20,390.64/x
  3. Step 3: Cross multiply
    34,731.05x = 47,927.85 × 20,390.64
  4. Step 4: Simplify right side
    34,731.05x = 977,279,535.32
  5. Step 5: Solve for x
    x = 977,279,535.32/34,731.05
  6. Step 6: Final answer
    x = 28,138.50

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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.