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Finding the Fourth Proportional to 28,492.75, 39,320 and 17,314.75

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Solution

The fourth proportional to 28,492.75, 39,320 and 17,314.75 is: 23,894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.75 : 39,320 = 17,314.75 : x
  2. Step 2: Convert to fraction form
    28,492.75/39,320 = 17,314.75/x
  3. Step 3: Cross multiply
    28,492.75x = 39,320 × 17,314.75
  4. Step 4: Simplify right side
    28,492.75x = 680,815,970
  5. Step 5: Solve for x
    x = 680,815,970/28,492.75
  6. Step 6: Final answer
    x = 23,894.36

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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.