Home / 28,181.79-38,890.39-15,606.27

Finding the Fourth Proportional to 28,181.79, 38,890.39 and 15,606.27

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Solution

The fourth proportional to 28,181.79, 38,890.39 and 15,606.27 is: 21,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.79 : 38,890.39 = 15,606.27 : x
  2. Step 2: Convert to fraction form
    28,181.79/38,890.39 = 15,606.27/x
  3. Step 3: Cross multiply
    28,181.79x = 38,890.39 × 15,606.27
  4. Step 4: Simplify right side
    28,181.79x = 606,933,926.75
  5. Step 5: Solve for x
    x = 606,933,926.75/28,181.79
  6. Step 6: Final answer
    x = 21,536.39

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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.