Home / 28,506.85-39,338.69-15,759.14

Finding the Fourth Proportional to 28,506.85, 39,338.69 and 15,759.14

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Solution

The fourth proportional to 28,506.85, 39,338.69 and 15,759.14 is: 21,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.85 : 39,338.69 = 15,759.14 : x
  2. Step 2: Convert to fraction form
    28,506.85/39,338.69 = 15,759.14/x
  3. Step 3: Cross multiply
    28,506.85x = 39,338.69 × 15,759.14
  4. Step 4: Simplify right side
    28,506.85x = 619,943,647.64
  5. Step 5: Solve for x
    x = 619,943,647.64/28,506.85
  6. Step 6: Final answer
    x = 21,747.18

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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.