Home / 13,675.81-20,513.88-3,814.49

Finding the Fourth Proportional to 13,675.81, 20,513.88 and 3,814.49

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Solution

The fourth proportional to 13,675.81, 20,513.88 and 3,814.49 is: 5,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.81 : 20,513.88 = 3,814.49 : x
  2. Step 2: Convert to fraction form
    13,675.81/20,513.88 = 3,814.49/x
  3. Step 3: Cross multiply
    13,675.81x = 20,513.88 × 3,814.49
  4. Step 4: Simplify right side
    13,675.81x = 78,249,868.48
  5. Step 5: Solve for x
    x = 78,249,868.48/13,675.81
  6. Step 6: Final answer
    x = 5,721.77

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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.