Home / 13,515.84-20,273.71-3,655.12

Finding the Fourth Proportional to 13,515.84, 20,273.71 and 3,655.12

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Solution

The fourth proportional to 13,515.84, 20,273.71 and 3,655.12 is: 5,482.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.84 : 20,273.71 = 3,655.12 : x
  2. Step 2: Convert to fraction form
    13,515.84/20,273.71 = 3,655.12/x
  3. Step 3: Cross multiply
    13,515.84x = 20,273.71 × 3,655.12
  4. Step 4: Simplify right side
    13,515.84x = 74,102,842.90
  5. Step 5: Solve for x
    x = 74,102,842.90/13,515.84
  6. Step 6: Final answer
    x = 5,482.67

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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.