Home / 20,785.24-28,673.64-15,111.19

Finding the Fourth Proportional to 20,785.24, 28,673.64 and 15,111.19

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Solution

The fourth proportional to 20,785.24, 28,673.64 and 15,111.19 is: 20,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.24 : 28,673.64 = 15,111.19 : x
  2. Step 2: Convert to fraction form
    20,785.24/28,673.64 = 15,111.19/x
  3. Step 3: Cross multiply
    20,785.24x = 28,673.64 × 15,111.19
  4. Step 4: Simplify right side
    20,785.24x = 433,292,822.03
  5. Step 5: Solve for x
    x = 433,292,822.03/20,785.24
  6. Step 6: Final answer
    x = 20,846.18

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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.