Home / 20,717.22-31,053.81-14,127.06

Finding the Fourth Proportional to 20,717.22, 31,053.81 and 14,127.06

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Solution

The fourth proportional to 20,717.22, 31,053.81 and 14,127.06 is: 21,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.22 : 31,053.81 = 14,127.06 : x
  2. Step 2: Convert to fraction form
    20,717.22/31,053.81 = 14,127.06/x
  3. Step 3: Cross multiply
    20,717.22x = 31,053.81 × 14,127.06
  4. Step 4: Simplify right side
    20,717.22x = 438,699,037.10
  5. Step 5: Solve for x
    x = 438,699,037.10/20,717.22
  6. Step 6: Final answer
    x = 21,175.57

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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.