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Finding the Fourth Proportional to 19,348.10, 26,700 and 12,620.96

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Solution

The fourth proportional to 19,348.10, 26,700 and 12,620.96 is: 17,416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,348.10 : 26,700 = 12,620.96 : x
  2. Step 2: Convert to fraction form
    19,348.10/26,700 = 12,620.96/x
  3. Step 3: Cross multiply
    19,348.10x = 26,700 × 12,620.96
  4. Step 4: Simplify right side
    19,348.10x = 336,979,632
  5. Step 5: Solve for x
    x = 336,979,632/19,348.10
  6. Step 6: Final answer
    x = 17,416.68

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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.