Home / 20,137.19-27,779.68-14,172.17

Finding the Fourth Proportional to 20,137.19, 27,779.68 and 14,172.17

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Solution

The fourth proportional to 20,137.19, 27,779.68 and 14,172.17 is: 19,550.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.19 : 27,779.68 = 14,172.17 : x
  2. Step 2: Convert to fraction form
    20,137.19/27,779.68 = 14,172.17/x
  3. Step 3: Cross multiply
    20,137.19x = 27,779.68 × 14,172.17
  4. Step 4: Simplify right side
    20,137.19x = 393,698,347.51
  5. Step 5: Solve for x
    x = 393,698,347.51/20,137.19
  6. Step 6: Final answer
    x = 19,550.81

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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.