Home / 19,172.73-28,720.16-9,679.19

Finding the Fourth Proportional to 19,172.73, 28,720.16 and 9,679.19

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Solution

The fourth proportional to 19,172.73, 28,720.16 and 9,679.19 is: 14,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.73 : 28,720.16 = 9,679.19 : x
  2. Step 2: Convert to fraction form
    19,172.73/28,720.16 = 9,679.19/x
  3. Step 3: Cross multiply
    19,172.73x = 28,720.16 × 9,679.19
  4. Step 4: Simplify right side
    19,172.73x = 277,987,741.87
  5. Step 5: Solve for x
    x = 277,987,741.87/19,172.73
  6. Step 6: Final answer
    x = 14,499.12

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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.