Home / 13,718.84-20,578.08-3,330.68

Finding the Fourth Proportional to 13,718.84, 20,578.08 and 3,330.68

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Solution

The fourth proportional to 13,718.84, 20,578.08 and 3,330.68 is: 4,995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.84 : 20,578.08 = 3,330.68 : x
  2. Step 2: Convert to fraction form
    13,718.84/20,578.08 = 3,330.68/x
  3. Step 3: Cross multiply
    13,718.84x = 20,578.08 × 3,330.68
  4. Step 4: Simplify right side
    13,718.84x = 68,538,999.49
  5. Step 5: Solve for x
    x = 68,538,999.49/13,718.84
  6. Step 6: Final answer
    x = 4,995.98

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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.