Home / 28,440.96-39,267.96-18,393.72

Finding the Fourth Proportional to 28,440.96, 39,267.96 and 18,393.72

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Solution

The fourth proportional to 28,440.96, 39,267.96 and 18,393.72 is: 25,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.96 : 39,267.96 = 18,393.72 : x
  2. Step 2: Convert to fraction form
    28,440.96/39,267.96 = 18,393.72/x
  3. Step 3: Cross multiply
    28,440.96x = 39,267.96 × 18,393.72
  4. Step 4: Simplify right side
    28,440.96x = 722,283,861.21
  5. Step 5: Solve for x
    x = 722,283,861.21/28,440.96
  6. Step 6: Final answer
    x = 25,395.90

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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.