Home / 13,299.81-18,353.84-10,319.69

Finding the Fourth Proportional to 13,299.81, 18,353.84 and 10,319.69

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Solution

The fourth proportional to 13,299.81, 18,353.84 and 10,319.69 is: 14,241.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.81 : 18,353.84 = 10,319.69 : x
  2. Step 2: Convert to fraction form
    13,299.81/18,353.84 = 10,319.69/x
  3. Step 3: Cross multiply
    13,299.81x = 18,353.84 × 10,319.69
  4. Step 4: Simplify right side
    13,299.81x = 189,405,795.74
  5. Step 5: Solve for x
    x = 189,405,795.74/13,299.81
  6. Step 6: Final answer
    x = 14,241.24

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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.