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Finding the Fourth Proportional to 20,437.58, 30,658.77 and 7,291.82

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Solution

The fourth proportional to 20,437.58, 30,658.77 and 7,291.82 is: 10,938.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.58 : 30,658.77 = 7,291.82 : x
  2. Step 2: Convert to fraction form
    20,437.58/30,658.77 = 7,291.82/x
  3. Step 3: Cross multiply
    20,437.58x = 30,658.77 × 7,291.82
  4. Step 4: Simplify right side
    20,437.58x = 223,558,232.26
  5. Step 5: Solve for x
    x = 223,558,232.26/20,437.58
  6. Step 6: Final answer
    x = 10,938.59

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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.