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Finding the Fourth Proportional to 30,352.77, 41,871.21 and 20,277.99

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Solution

The fourth proportional to 30,352.77, 41,871.21 and 20,277.99 is: 27,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,352.77 : 41,871.21 = 20,277.99 : x
  2. Step 2: Convert to fraction form
    30,352.77/41,871.21 = 20,277.99/x
  3. Step 3: Cross multiply
    30,352.77x = 41,871.21 × 20,277.99
  4. Step 4: Simplify right side
    30,352.77x = 849,063,977.67
  5. Step 5: Solve for x
    x = 849,063,977.67/30,352.77
  6. Step 6: Final answer
    x = 27,973.20

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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.