Home / 15,387.96-21,233.76-8,673.42

Finding the Fourth Proportional to 15,387.96, 21,233.76 and 8,673.42

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Solution

The fourth proportional to 15,387.96, 21,233.76 and 8,673.42 is: 11,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.96 : 21,233.76 = 8,673.42 : x
  2. Step 2: Convert to fraction form
    15,387.96/21,233.76 = 8,673.42/x
  3. Step 3: Cross multiply
    15,387.96x = 21,233.76 × 8,673.42
  4. Step 4: Simplify right side
    15,387.96x = 184,169,318.66
  5. Step 5: Solve for x
    x = 184,169,318.66/15,387.96
  6. Step 6: Final answer
    x = 11,968.40

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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.