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Finding the Fourth Proportional to 28,603.80, 39,473.16 and 16,028.54

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Solution

The fourth proportional to 28,603.80, 39,473.16 and 16,028.54 is: 22,119.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.80 : 39,473.16 = 16,028.54 : x
  2. Step 2: Convert to fraction form
    28,603.80/39,473.16 = 16,028.54/x
  3. Step 3: Cross multiply
    28,603.80x = 39,473.16 × 16,028.54
  4. Step 4: Simplify right side
    28,603.80x = 632,697,123.99
  5. Step 5: Solve for x
    x = 632,697,123.99/28,603.80
  6. Step 6: Final answer
    x = 22,119.34

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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.