Home / 42,488.40-63,732.58-20,234.31

Finding the Fourth Proportional to 42,488.40, 63,732.58 and 20,234.31

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Solution

The fourth proportional to 42,488.40, 63,732.58 and 20,234.31 is: 30,351.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,488.40 : 63,732.58 = 20,234.31 : x
  2. Step 2: Convert to fraction form
    42,488.40/63,732.58 = 20,234.31/x
  3. Step 3: Cross multiply
    42,488.40x = 63,732.58 × 20,234.31
  4. Step 4: Simplify right side
    42,488.40x = 1,289,584,780.82
  5. Step 5: Solve for x
    x = 1,289,584,780.82/42,488.40
  6. Step 6: Final answer
    x = 30,351.46

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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.