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Finding the Fourth Proportional to 17,987.74, 26,980.65 and 5,507.77

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Solution

The fourth proportional to 17,987.74, 26,980.65 and 5,507.77 is: 8,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.74 : 26,980.65 = 5,507.77 : x
  2. Step 2: Convert to fraction form
    17,987.74/26,980.65 = 5,507.77/x
  3. Step 3: Cross multiply
    17,987.74x = 26,980.65 × 5,507.77
  4. Step 4: Simplify right side
    17,987.74x = 148,603,214.65
  5. Step 5: Solve for x
    x = 148,603,214.65/17,987.74
  6. Step 6: Final answer
    x = 8,261.36

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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.