Home / 18,999.36-28,497.60-6,678.72

Finding the Fourth Proportional to 18,999.36, 28,497.60 and 6,678.72

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Solution

The fourth proportional to 18,999.36, 28,497.60 and 6,678.72 is: 10,017.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.36 : 28,497.60 = 6,678.72 : x
  2. Step 2: Convert to fraction form
    18,999.36/28,497.60 = 6,678.72/x
  3. Step 3: Cross multiply
    18,999.36x = 28,497.60 × 6,678.72
  4. Step 4: Simplify right side
    18,999.36x = 190,327,491.07
  5. Step 5: Solve for x
    x = 190,327,491.07/18,999.36
  6. Step 6: Final answer
    x = 10,017.57

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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.