Home / 21,010.68-28,993.01-13,051.35

Finding the Fourth Proportional to 21,010.68, 28,993.01 and 13,051.35

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Solution

The fourth proportional to 21,010.68, 28,993.01 and 13,051.35 is: 18,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.68 : 28,993.01 = 13,051.35 : x
  2. Step 2: Convert to fraction form
    21,010.68/28,993.01 = 13,051.35/x
  3. Step 3: Cross multiply
    21,010.68x = 28,993.01 × 13,051.35
  4. Step 4: Simplify right side
    21,010.68x = 378,397,855.81
  5. Step 5: Solve for x
    x = 378,397,855.81/21,010.68
  6. Step 6: Final answer
    x = 18,009.79

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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.