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Finding the Fourth Proportional to 28,430.64, 39,224.03 and 16,943.22

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Solution

The fourth proportional to 28,430.64, 39,224.03 and 16,943.22 is: 23,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.64 : 39,224.03 = 16,943.22 : x
  2. Step 2: Convert to fraction form
    28,430.64/39,224.03 = 16,943.22/x
  3. Step 3: Cross multiply
    28,430.64x = 39,224.03 × 16,943.22
  4. Step 4: Simplify right side
    28,430.64x = 664,581,284.86
  5. Step 5: Solve for x
    x = 664,581,284.86/28,430.64
  6. Step 6: Final answer
    x = 23,375.53

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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.