Home / 18,728.12-25,833.72-12,011.28

Finding the Fourth Proportional to 18,728.12, 25,833.72 and 12,011.28

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Solution

The fourth proportional to 18,728.12, 25,833.72 and 12,011.28 is: 16,568.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.12 : 25,833.72 = 12,011.28 : x
  2. Step 2: Convert to fraction form
    18,728.12/25,833.72 = 12,011.28/x
  3. Step 3: Cross multiply
    18,728.12x = 25,833.72 × 12,011.28
  4. Step 4: Simplify right side
    18,728.12x = 310,296,044.36
  5. Step 5: Solve for x
    x = 310,296,044.36/18,728.12
  6. Step 6: Final answer
    x = 16,568.46

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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.