Home / 28,316.68-39,059.64-20,369.56

Finding the Fourth Proportional to 28,316.68, 39,059.64 and 20,369.56

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Solution

The fourth proportional to 28,316.68, 39,059.64 and 20,369.56 is: 28,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.68 : 39,059.64 = 20,369.56 : x
  2. Step 2: Convert to fraction form
    28,316.68/39,059.64 = 20,369.56/x
  3. Step 3: Cross multiply
    28,316.68x = 39,059.64 × 20,369.56
  4. Step 4: Simplify right side
    28,316.68x = 795,627,680.56
  5. Step 5: Solve for x
    x = 795,627,680.56/28,316.68
  6. Step 6: Final answer
    x = 28,097.49

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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.