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Finding the Fourth Proportional to 16,938.20, 25,385.70 and 13,023.20

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Solution

The fourth proportional to 16,938.20, 25,385.70 and 13,023.20 is: 19,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.20 : 25,385.70 = 13,023.20 : x
  2. Step 2: Convert to fraction form
    16,938.20/25,385.70 = 13,023.20/x
  3. Step 3: Cross multiply
    16,938.20x = 25,385.70 × 13,023.20
  4. Step 4: Simplify right side
    16,938.20x = 330,603,048.24
  5. Step 5: Solve for x
    x = 330,603,048.24/16,938.20
  6. Step 6: Final answer
    x = 19,518.19

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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.