Home / 20,718.22-31,055.31-14,128.06

Finding the Fourth Proportional to 20,718.22, 31,055.31 and 14,128.06

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Solution

The fourth proportional to 20,718.22, 31,055.31 and 14,128.06 is: 21,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.22 : 31,055.31 = 14,128.06 : x
  2. Step 2: Convert to fraction form
    20,718.22/31,055.31 = 14,128.06/x
  3. Step 3: Cross multiply
    20,718.22x = 31,055.31 × 14,128.06
  4. Step 4: Simplify right side
    20,718.22x = 438,751,283.00
  5. Step 5: Solve for x
    x = 438,751,283.00/20,718.22
  6. Step 6: Final answer
    x = 21,177.07

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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.