Home / 28,654.90-39,541.78-15,907.08

Finding the Fourth Proportional to 28,654.90, 39,541.78 and 15,907.08

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Solution

The fourth proportional to 28,654.90, 39,541.78 and 15,907.08 is: 21,950.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.90 : 39,541.78 = 15,907.08 : x
  2. Step 2: Convert to fraction form
    28,654.90/39,541.78 = 15,907.08/x
  3. Step 3: Cross multiply
    28,654.90x = 39,541.78 × 15,907.08
  4. Step 4: Simplify right side
    28,654.90x = 628,994,257.80
  5. Step 5: Solve for x
    x = 628,994,257.80/28,654.90
  6. Step 6: Final answer
    x = 21,950.67

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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.