Home / 18,128.07-27,182.39-6,439.77

Finding the Fourth Proportional to 18,128.07, 27,182.39 and 6,439.77

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Solution

The fourth proportional to 18,128.07, 27,182.39 and 6,439.77 is: 9,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.07 : 27,182.39 = 6,439.77 : x
  2. Step 2: Convert to fraction form
    18,128.07/27,182.39 = 6,439.77/x
  3. Step 3: Cross multiply
    18,128.07x = 27,182.39 × 6,439.77
  4. Step 4: Simplify right side
    18,128.07x = 175,048,307.45
  5. Step 5: Solve for x
    x = 175,048,307.45/18,128.07
  6. Step 6: Final answer
    x = 9,656.20

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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.