Home / 18,918.48-26,110.74-10,965.60

Finding the Fourth Proportional to 18,918.48, 26,110.74 and 10,965.60

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Solution

The fourth proportional to 18,918.48, 26,110.74 and 10,965.60 is: 15,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.48 : 26,110.74 = 10,965.60 : x
  2. Step 2: Convert to fraction form
    18,918.48/26,110.74 = 10,965.60/x
  3. Step 3: Cross multiply
    18,918.48x = 26,110.74 × 10,965.60
  4. Step 4: Simplify right side
    18,918.48x = 286,319,930.54
  5. Step 5: Solve for x
    x = 286,319,930.54/18,918.48
  6. Step 6: Final answer
    x = 15,134.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.