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Finding the Fourth Proportional to 17,980.32, 26,958.76 and 8,620.08

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Solution

The fourth proportional to 17,980.32, 26,958.76 and 8,620.08 is: 12,924.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.32 : 26,958.76 = 8,620.08 : x
  2. Step 2: Convert to fraction form
    17,980.32/26,958.76 = 8,620.08/x
  3. Step 3: Cross multiply
    17,980.32x = 26,958.76 × 8,620.08
  4. Step 4: Simplify right side
    17,980.32x = 232,386,667.90
  5. Step 5: Solve for x
    x = 232,386,667.90/17,980.32
  6. Step 6: Final answer
    x = 12,924.50

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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.