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Finding the Fourth Proportional to 12,620.51, 17,416.43 and 6,955.46

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Solution

The fourth proportional to 12,620.51, 17,416.43 and 6,955.46 is: 9,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.51 : 17,416.43 = 6,955.46 : x
  2. Step 2: Convert to fraction form
    12,620.51/17,416.43 = 6,955.46/x
  3. Step 3: Cross multiply
    12,620.51x = 17,416.43 × 6,955.46
  4. Step 4: Simplify right side
    12,620.51x = 121,139,290.97
  5. Step 5: Solve for x
    x = 121,139,290.97/12,620.51
  6. Step 6: Final answer
    x = 9,598.60

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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.