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Finding the Fourth Proportional to 17,615.88, 26,402.76 and 13,423.32

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Solution

The fourth proportional to 17,615.88, 26,402.76 and 13,423.32 is: 20,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,615.88 : 26,402.76 = 13,423.32 : x
  2. Step 2: Convert to fraction form
    17,615.88/26,402.76 = 13,423.32/x
  3. Step 3: Cross multiply
    17,615.88x = 26,402.76 × 13,423.32
  4. Step 4: Simplify right side
    17,615.88x = 354,412,696.36
  5. Step 5: Solve for x
    x = 354,412,696.36/17,615.88
  6. Step 6: Final answer
    x = 20,118.93

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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.