Home / 28,219.68-38,944.91-15,644.43

Finding the Fourth Proportional to 28,219.68, 38,944.91 and 15,644.43

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Solution

The fourth proportional to 28,219.68, 38,944.91 and 15,644.43 is: 21,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.68 : 38,944.91 = 15,644.43 : x
  2. Step 2: Convert to fraction form
    28,219.68/38,944.91 = 15,644.43/x
  3. Step 3: Cross multiply
    28,219.68x = 38,944.91 × 15,644.43
  4. Step 4: Simplify right side
    28,219.68x = 609,271,015.71
  5. Step 5: Solve for x
    x = 609,271,015.71/28,219.68
  6. Step 6: Final answer
    x = 21,590.29

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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.