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Finding the Fourth Proportional to 17,980.80, 26,959.53 and 8,620.59

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Solution

The fourth proportional to 17,980.80, 26,959.53 and 8,620.59 is: 12,925.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.80 : 26,959.53 = 8,620.59 : x
  2. Step 2: Convert to fraction form
    17,980.80/26,959.53 = 8,620.59/x
  3. Step 3: Cross multiply
    17,980.80x = 26,959.53 × 8,620.59
  4. Step 4: Simplify right side
    17,980.80x = 232,407,054.72
  5. Step 5: Solve for x
    x = 232,407,054.72/17,980.80
  6. Step 6: Final answer
    x = 12,925.29

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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.