Home / 15,230.68-21,022.81-8,858.77

Finding the Fourth Proportional to 15,230.68, 21,022.81 and 8,858.77

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Solution

The fourth proportional to 15,230.68, 21,022.81 and 8,858.77 is: 12,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,230.68 : 21,022.81 = 8,858.77 : x
  2. Step 2: Convert to fraction form
    15,230.68/21,022.81 = 8,858.77/x
  3. Step 3: Cross multiply
    15,230.68x = 21,022.81 × 8,858.77
  4. Step 4: Simplify right side
    15,230.68x = 186,236,313.25
  5. Step 5: Solve for x
    x = 186,236,313.25/15,230.68
  6. Step 6: Final answer
    x = 12,227.71

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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.