Home / 18,128.88-25,017.86-11,056.77

Finding the Fourth Proportional to 18,128.88, 25,017.86 and 11,056.77

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Solution

The fourth proportional to 18,128.88, 25,017.86 and 11,056.77 is: 15,258.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.88 : 25,017.86 = 11,056.77 : x
  2. Step 2: Convert to fraction form
    18,128.88/25,017.86 = 11,056.77/x
  3. Step 3: Cross multiply
    18,128.88x = 25,017.86 × 11,056.77
  4. Step 4: Simplify right side
    18,128.88x = 276,616,723.91
  5. Step 5: Solve for x
    x = 276,616,723.91/18,128.88
  6. Step 6: Final answer
    x = 15,258.35

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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.