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Finding the Fourth Proportional to 17,894.56, 24,690.90 and 10,821.40

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Solution

The fourth proportional to 17,894.56, 24,690.90 and 10,821.40 is: 14,931.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,894.56 : 24,690.90 = 10,821.40 : x
  2. Step 2: Convert to fraction form
    17,894.56/24,690.90 = 10,821.40/x
  3. Step 3: Cross multiply
    17,894.56x = 24,690.90 × 10,821.40
  4. Step 4: Simplify right side
    17,894.56x = 267,190,105.26
  5. Step 5: Solve for x
    x = 267,190,105.26/17,894.56
  6. Step 6: Final answer
    x = 14,931.36

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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.