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Finding the Fourth Proportional to 19,446.64, 26,845.50 and 15,203.92

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Solution

The fourth proportional to 19,446.64, 26,845.50 and 15,203.92 is: 20,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,446.64 : 26,845.50 = 15,203.92 : x
  2. Step 2: Convert to fraction form
    19,446.64/26,845.50 = 15,203.92/x
  3. Step 3: Cross multiply
    19,446.64x = 26,845.50 × 15,203.92
  4. Step 4: Simplify right side
    19,446.64x = 408,156,834.36
  5. Step 5: Solve for x
    x = 408,156,834.36/19,446.64
  6. Step 6: Final answer
    x = 20,988.55

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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.