Home / 19,683.94-27,173.53-13,638.77

Finding the Fourth Proportional to 19,683.94, 27,173.53 and 13,638.77

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Solution

The fourth proportional to 19,683.94, 27,173.53 and 13,638.77 is: 18,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.94 : 27,173.53 = 13,638.77 : x
  2. Step 2: Convert to fraction form
    19,683.94/27,173.53 = 13,638.77/x
  3. Step 3: Cross multiply
    19,683.94x = 27,173.53 × 13,638.77
  4. Step 4: Simplify right side
    19,683.94x = 370,613,525.76
  5. Step 5: Solve for x
    x = 370,613,525.76/19,683.94
  6. Step 6: Final answer
    x = 18,828.22

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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.