Home / 11,172.72-15,403.68-9,285.92

Finding the Fourth Proportional to 11,172.72, 15,403.68 and 9,285.92

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Solution

The fourth proportional to 11,172.72, 15,403.68 and 9,285.92 is: 12,802.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.72 : 15,403.68 = 9,285.92 : x
  2. Step 2: Convert to fraction form
    11,172.72/15,403.68 = 9,285.92/x
  3. Step 3: Cross multiply
    11,172.72x = 15,403.68 × 9,285.92
  4. Step 4: Simplify right side
    11,172.72x = 143,037,340.19
  5. Step 5: Solve for x
    x = 143,037,340.19/11,172.72
  6. Step 6: Final answer
    x = 12,802.37

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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.