Home / 28,991.68-43,488.48-21,118.24

Finding the Fourth Proportional to 28,991.68, 43,488.48 and 21,118.24

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Solution

The fourth proportional to 28,991.68, 43,488.48 and 21,118.24 is: 31,678.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.68 : 43,488.48 = 21,118.24 : x
  2. Step 2: Convert to fraction form
    28,991.68/43,488.48 = 21,118.24/x
  3. Step 3: Cross multiply
    28,991.68x = 43,488.48 × 21,118.24
  4. Step 4: Simplify right side
    28,991.68x = 918,400,157.88
  5. Step 5: Solve for x
    x = 918,400,157.88/28,991.68
  6. Step 6: Final answer
    x = 31,678.06

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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.