Home / 28,999.42-40,004.68-18,372.22

Finding the Fourth Proportional to 28,999.42, 40,004.68 and 18,372.22

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Solution

The fourth proportional to 28,999.42, 40,004.68 and 18,372.22 is: 25,344.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.42 : 40,004.68 = 18,372.22 : x
  2. Step 2: Convert to fraction form
    28,999.42/40,004.68 = 18,372.22/x
  3. Step 3: Cross multiply
    28,999.42x = 40,004.68 × 18,372.22
  4. Step 4: Simplify right side
    28,999.42x = 734,974,781.99
  5. Step 5: Solve for x
    x = 734,974,781.99/28,999.42
  6. Step 6: Final answer
    x = 25,344.46

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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.