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Finding the Fourth Proportional to 28,094.72, 38,765 and 17,889.86

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Solution

The fourth proportional to 28,094.72, 38,765 and 17,889.86 is: 24,684.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,094.72 : 38,765 = 17,889.86 : x
  2. Step 2: Convert to fraction form
    28,094.72/38,765 = 17,889.86/x
  3. Step 3: Cross multiply
    28,094.72x = 38,765 × 17,889.86
  4. Step 4: Simplify right side
    28,094.72x = 693,500,422.90
  5. Step 5: Solve for x
    x = 693,500,422.90/28,094.72
  6. Step 6: Final answer
    x = 24,684.37

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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.