Home / 15,388.65-21,236.48-8,673.68

Finding the Fourth Proportional to 15,388.65, 21,236.48 and 8,673.68

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Solution

The fourth proportional to 15,388.65, 21,236.48 and 8,673.68 is: 11,969.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.65 : 21,236.48 = 8,673.68 : x
  2. Step 2: Convert to fraction form
    15,388.65/21,236.48 = 8,673.68/x
  3. Step 3: Cross multiply
    15,388.65x = 21,236.48 × 8,673.68
  4. Step 4: Simplify right side
    15,388.65x = 184,198,474.10
  5. Step 5: Solve for x
    x = 184,198,474.10/15,388.65
  6. Step 6: Final answer
    x = 11,969.76

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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.