Home / 14,991.05-20,686.75-8,276.51

Finding the Fourth Proportional to 14,991.05, 20,686.75 and 8,276.51

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Solution

The fourth proportional to 14,991.05, 20,686.75 and 8,276.51 is: 11,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.05 : 20,686.75 = 8,276.51 : x
  2. Step 2: Convert to fraction form
    14,991.05/20,686.75 = 8,276.51/x
  3. Step 3: Cross multiply
    14,991.05x = 20,686.75 × 8,276.51
  4. Step 4: Simplify right side
    14,991.05x = 171,214,093.24
  5. Step 5: Solve for x
    x = 171,214,093.24/14,991.05
  6. Step 6: Final answer
    x = 11,421.09

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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.