Home / 13,251.21-18,293.78-10,219.70

Finding the Fourth Proportional to 13,251.21, 18,293.78 and 10,219.70

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Solution

The fourth proportional to 13,251.21, 18,293.78 and 10,219.70 is: 14,108.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.21 : 18,293.78 = 10,219.70 : x
  2. Step 2: Convert to fraction form
    13,251.21/18,293.78 = 10,219.70/x
  3. Step 3: Cross multiply
    13,251.21x = 18,293.78 × 10,219.70
  4. Step 4: Simplify right side
    13,251.21x = 186,956,943.47
  5. Step 5: Solve for x
    x = 186,956,943.47/13,251.21
  6. Step 6: Final answer
    x = 14,108.67

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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.