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Finding the Fourth Proportional to 34,983.48, 48,277.48 and 20,643.60

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Solution

The fourth proportional to 34,983.48, 48,277.48 and 20,643.60 is: 28,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,983.48 : 48,277.48 = 20,643.60 : x
  2. Step 2: Convert to fraction form
    34,983.48/48,277.48 = 20,643.60/x
  3. Step 3: Cross multiply
    34,983.48x = 48,277.48 × 20,643.60
  4. Step 4: Simplify right side
    34,983.48x = 996,620,986.13
  5. Step 5: Solve for x
    x = 996,620,986.13/34,983.48
  6. Step 6: Final answer
    x = 28,488.33

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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.