Home / 21,392.39-29,522.60-12,319.10

Finding the Fourth Proportional to 21,392.39, 29,522.60 and 12,319.10

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Solution

The fourth proportional to 21,392.39, 29,522.60 and 12,319.10 is: 17,000.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.39 : 29,522.60 = 12,319.10 : x
  2. Step 2: Convert to fraction form
    21,392.39/29,522.60 = 12,319.10/x
  3. Step 3: Cross multiply
    21,392.39x = 29,522.60 × 12,319.10
  4. Step 4: Simplify right side
    21,392.39x = 363,691,861.66
  5. Step 5: Solve for x
    x = 363,691,861.66/21,392.39
  6. Step 6: Final answer
    x = 17,000.99

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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.