Home / 13,185.78-19,792.56-12,888.26

Finding the Fourth Proportional to 13,185.78, 19,792.56 and 12,888.26

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Solution

The fourth proportional to 13,185.78, 19,792.56 and 12,888.26 is: 19,345.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.78 : 19,792.56 = 12,888.26 : x
  2. Step 2: Convert to fraction form
    13,185.78/19,792.56 = 12,888.26/x
  3. Step 3: Cross multiply
    13,185.78x = 19,792.56 × 12,888.26
  4. Step 4: Simplify right side
    13,185.78x = 255,091,659.35
  5. Step 5: Solve for x
    x = 255,091,659.35/13,185.78
  6. Step 6: Final answer
    x = 19,345.97

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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.