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Finding the Fourth Proportional to 19,300.82, 26,635.89 and 12,590.90

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Solution

The fourth proportional to 19,300.82, 26,635.89 and 12,590.90 is: 17,375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.82 : 26,635.89 = 12,590.90 : x
  2. Step 2: Convert to fraction form
    19,300.82/26,635.89 = 12,590.90/x
  3. Step 3: Cross multiply
    19,300.82x = 26,635.89 × 12,590.90
  4. Step 4: Simplify right side
    19,300.82x = 335,369,827.40
  5. Step 5: Solve for x
    x = 335,369,827.40/19,300.82
  6. Step 6: Final answer
    x = 17,375.94

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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.