Home / 18,905.98-28,309.43-13,329.13

Finding the Fourth Proportional to 18,905.98, 28,309.43 and 13,329.13

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Solution

The fourth proportional to 18,905.98, 28,309.43 and 13,329.13 is: 19,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.98 : 28,309.43 = 13,329.13 : x
  2. Step 2: Convert to fraction form
    18,905.98/28,309.43 = 13,329.13/x
  3. Step 3: Cross multiply
    18,905.98x = 28,309.43 × 13,329.13
  4. Step 4: Simplify right side
    18,905.98x = 377,340,126.81
  5. Step 5: Solve for x
    x = 377,340,126.81/18,905.98
  6. Step 6: Final answer
    x = 19,958.77

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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.