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Finding the Fourth Proportional to 17,955.60, 26,700.78 and 17,401.20

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Solution

The fourth proportional to 17,955.60, 26,700.78 and 17,401.20 is: 25,876.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,955.60 : 26,700.78 = 17,401.20 : x
  2. Step 2: Convert to fraction form
    17,955.60/26,700.78 = 17,401.20/x
  3. Step 3: Cross multiply
    17,955.60x = 26,700.78 × 17,401.20
  4. Step 4: Simplify right side
    17,955.60x = 464,625,612.94
  5. Step 5: Solve for x
    x = 464,625,612.94/17,955.60
  6. Step 6: Final answer
    x = 25,876.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.