Home / 20,210.19-27,880.03-13,504.81

Finding the Fourth Proportional to 20,210.19, 27,880.03 and 13,504.81

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Solution

The fourth proportional to 20,210.19, 27,880.03 and 13,504.81 is: 18,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.19 : 27,880.03 = 13,504.81 : x
  2. Step 2: Convert to fraction form
    20,210.19/27,880.03 = 13,504.81/x
  3. Step 3: Cross multiply
    20,210.19x = 27,880.03 × 13,504.81
  4. Step 4: Simplify right side
    20,210.19x = 376,514,301.02
  5. Step 5: Solve for x
    x = 376,514,301.02/20,210.19
  6. Step 6: Final answer
    x = 18,629.93

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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.