Home / 13,685.09-20,476.38-9,745.45

Finding the Fourth Proportional to 13,685.09, 20,476.38 and 9,745.45

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Solution

The fourth proportional to 13,685.09, 20,476.38 and 9,745.45 is: 14,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.09 : 20,476.38 = 9,745.45 : x
  2. Step 2: Convert to fraction form
    13,685.09/20,476.38 = 9,745.45/x
  3. Step 3: Cross multiply
    13,685.09x = 20,476.38 × 9,745.45
  4. Step 4: Simplify right side
    13,685.09x = 199,551,488.74
  5. Step 5: Solve for x
    x = 199,551,488.74/13,685.09
  6. Step 6: Final answer
    x = 14,581.67

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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.