Home / 15,388.79-21,236.04-8,674.25

Finding the Fourth Proportional to 15,388.79, 21,236.04 and 8,674.25

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Solution

The fourth proportional to 15,388.79, 21,236.04 and 8,674.25 is: 11,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.79 : 21,236.04 = 8,674.25 : x
  2. Step 2: Convert to fraction form
    15,388.79/21,236.04 = 8,674.25/x
  3. Step 3: Cross multiply
    15,388.79x = 21,236.04 × 8,674.25
  4. Step 4: Simplify right side
    15,388.79x = 184,206,613.79
  5. Step 5: Solve for x
    x = 184,206,613.79/15,388.79
  6. Step 6: Final answer
    x = 11,970.19

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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.