Home / 28,631.49-39,511.29-15,884.54

Finding the Fourth Proportional to 28,631.49, 39,511.29 and 15,884.54

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Solution

The fourth proportional to 28,631.49, 39,511.29 and 15,884.54 is: 21,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.49 : 39,511.29 = 15,884.54 : x
  2. Step 2: Convert to fraction form
    28,631.49/39,511.29 = 15,884.54/x
  3. Step 3: Cross multiply
    28,631.49x = 39,511.29 × 15,884.54
  4. Step 4: Simplify right side
    28,631.49x = 627,618,666.46
  5. Step 5: Solve for x
    x = 627,618,666.46/28,631.49
  6. Step 6: Final answer
    x = 21,920.57

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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.