Home / 19,311.90-28,937.81-9,305.87

Finding the Fourth Proportional to 19,311.90, 28,937.81 and 9,305.87

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Solution

The fourth proportional to 19,311.90, 28,937.81 and 9,305.87 is: 13,944.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.90 : 28,937.81 = 9,305.87 : x
  2. Step 2: Convert to fraction form
    19,311.90/28,937.81 = 9,305.87/x
  3. Step 3: Cross multiply
    19,311.90x = 28,937.81 × 9,305.87
  4. Step 4: Simplify right side
    19,311.90x = 269,291,306.73
  5. Step 5: Solve for x
    x = 269,291,306.73/19,311.90
  6. Step 6: Final answer
    x = 13,944.32

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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.