Home / 19,112.64-28,667.16-6,630.72

Finding the Fourth Proportional to 19,112.64, 28,667.16 and 6,630.72

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Solution

The fourth proportional to 19,112.64, 28,667.16 and 6,630.72 is: 9,945.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.64 : 28,667.16 = 6,630.72 : x
  2. Step 2: Convert to fraction form
    19,112.64/28,667.16 = 6,630.72/x
  3. Step 3: Cross multiply
    19,112.64x = 28,667.16 × 6,630.72
  4. Step 4: Simplify right side
    19,112.64x = 190,083,911.16
  5. Step 5: Solve for x
    x = 190,083,911.16/19,112.64
  6. Step 6: Final answer
    x = 9,945.46

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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.