Home / 15,113.45-20,851.43-8,738.35

Finding the Fourth Proportional to 15,113.45, 20,851.43 and 8,738.35

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Solution

The fourth proportional to 15,113.45, 20,851.43 and 8,738.35 is: 12,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.45 : 20,851.43 = 8,738.35 : x
  2. Step 2: Convert to fraction form
    15,113.45/20,851.43 = 8,738.35/x
  3. Step 3: Cross multiply
    15,113.45x = 20,851.43 × 8,738.35
  4. Step 4: Simplify right side
    15,113.45x = 182,206,997.52
  5. Step 5: Solve for x
    x = 182,206,997.52/15,113.45
  6. Step 6: Final answer
    x = 12,055.95

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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.