Home / 18,866.51-28,256.66-9,012.75

Finding the Fourth Proportional to 18,866.51, 28,256.66 and 9,012.75

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Solution

The fourth proportional to 18,866.51, 28,256.66 and 9,012.75 is: 13,498.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.51 : 28,256.66 = 9,012.75 : x
  2. Step 2: Convert to fraction form
    18,866.51/28,256.66 = 9,012.75/x
  3. Step 3: Cross multiply
    18,866.51x = 28,256.66 × 9,012.75
  4. Step 4: Simplify right side
    18,866.51x = 254,670,212.42
  5. Step 5: Solve for x
    x = 254,670,212.42/18,866.51
  6. Step 6: Final answer
    x = 13,498.53

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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.