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Finding the Fourth Proportional to 18,590.39, 27,885.64 and 13,068.44

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Solution

The fourth proportional to 18,590.39, 27,885.64 and 13,068.44 is: 19,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.39 : 27,885.64 = 13,068.44 : x
  2. Step 2: Convert to fraction form
    18,590.39/27,885.64 = 13,068.44/x
  3. Step 3: Cross multiply
    18,590.39x = 27,885.64 × 13,068.44
  4. Step 4: Simplify right side
    18,590.39x = 364,421,813.20
  5. Step 5: Solve for x
    x = 364,421,813.20/18,590.39
  6. Step 6: Final answer
    x = 19,602.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.