Home / 15,764.51-21,755.00-8,690.94

Finding the Fourth Proportional to 15,764.51, 21,755.00 and 8,690.94

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Solution

The fourth proportional to 15,764.51, 21,755.00 and 8,690.94 is: 11,993.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.51 : 21,755.00 = 8,690.94 : x
  2. Step 2: Convert to fraction form
    15,764.51/21,755.00 = 8,690.94/x
  3. Step 3: Cross multiply
    15,764.51x = 21,755.00 × 8,690.94
  4. Step 4: Simplify right side
    15,764.51x = 189,071,421.43
  5. Step 5: Solve for x
    x = 189,071,421.43/15,764.51
  6. Step 6: Final answer
    x = 11,993.48

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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.