Home / 13,378.05-20,065.48-3,518.10

Finding the Fourth Proportional to 13,378.05, 20,065.48 and 3,518.10

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Solution

The fourth proportional to 13,378.05, 20,065.48 and 3,518.10 is: 5,276.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.05 : 20,065.48 = 3,518.10 : x
  2. Step 2: Convert to fraction form
    13,378.05/20,065.48 = 3,518.10/x
  3. Step 3: Cross multiply
    13,378.05x = 20,065.48 × 3,518.10
  4. Step 4: Simplify right side
    13,378.05x = 70,592,376.18
  5. Step 5: Solve for x
    x = 70,592,376.18/13,378.05
  6. Step 6: Final answer
    x = 5,276.73

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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.