Home / 13,723.35-18,938.48-8,416.23

Finding the Fourth Proportional to 13,723.35, 18,938.48 and 8,416.23

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Solution

The fourth proportional to 13,723.35, 18,938.48 and 8,416.23 is: 11,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.35 : 18,938.48 = 8,416.23 : x
  2. Step 2: Convert to fraction form
    13,723.35/18,938.48 = 8,416.23/x
  3. Step 3: Cross multiply
    13,723.35x = 18,938.48 × 8,416.23
  4. Step 4: Simplify right side
    13,723.35x = 159,390,561.45
  5. Step 5: Solve for x
    x = 159,390,561.45/13,723.35
  6. Step 6: Final answer
    x = 11,614.55

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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.