Home / 15,130.21-20,877.66-8,414.99

Finding the Fourth Proportional to 15,130.21, 20,877.66 and 8,414.99

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Solution

The fourth proportional to 15,130.21, 20,877.66 and 8,414.99 is: 11,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.21 : 20,877.66 = 8,414.99 : x
  2. Step 2: Convert to fraction form
    15,130.21/20,877.66 = 8,414.99/x
  3. Step 3: Cross multiply
    15,130.21x = 20,877.66 × 8,414.99
  4. Step 4: Simplify right side
    15,130.21x = 175,685,153.66
  5. Step 5: Solve for x
    x = 175,685,153.66/15,130.21
  6. Step 6: Final answer
    x = 11,611.55

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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.