Home / 28,636.84-39,519.18-15,890.26

Finding the Fourth Proportional to 28,636.84, 39,519.18 and 15,890.26

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Solution

The fourth proportional to 28,636.84, 39,519.18 and 15,890.26 is: 21,928.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.84 : 39,519.18 = 15,890.26 : x
  2. Step 2: Convert to fraction form
    28,636.84/39,519.18 = 15,890.26/x
  3. Step 3: Cross multiply
    28,636.84x = 39,519.18 × 15,890.26
  4. Step 4: Simplify right side
    28,636.84x = 627,970,045.19
  5. Step 5: Solve for x
    x = 627,970,045.19/28,636.84
  6. Step 6: Final answer
    x = 21,928.75

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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.