Home / 12,556.81-18,755.65-11,837.08

Finding the Fourth Proportional to 12,556.81, 18,755.65 and 11,837.08

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Solution

The fourth proportional to 12,556.81, 18,755.65 and 11,837.08 is: 17,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.81 : 18,755.65 = 11,837.08 : x
  2. Step 2: Convert to fraction form
    12,556.81/18,755.65 = 11,837.08/x
  3. Step 3: Cross multiply
    12,556.81x = 18,755.65 × 11,837.08
  4. Step 4: Simplify right side
    12,556.81x = 222,012,129.50
  5. Step 5: Solve for x
    x = 222,012,129.50/12,556.81
  6. Step 6: Final answer
    x = 17,680.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.