Home / 15,912.61-23,860.75-8,420.21

Finding the Fourth Proportional to 15,912.61, 23,860.75 and 8,420.21

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Solution

The fourth proportional to 15,912.61, 23,860.75 and 8,420.21 is: 12,625.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.61 : 23,860.75 = 8,420.21 : x
  2. Step 2: Convert to fraction form
    15,912.61/23,860.75 = 8,420.21/x
  3. Step 3: Cross multiply
    15,912.61x = 23,860.75 × 8,420.21
  4. Step 4: Simplify right side
    15,912.61x = 200,912,525.76
  5. Step 5: Solve for x
    x = 200,912,525.76/15,912.61
  6. Step 6: Final answer
    x = 12,625.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.