Home / 15,750.09-21,735.06-8,676.51

Finding the Fourth Proportional to 15,750.09, 21,735.06 and 8,676.51

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Solution

The fourth proportional to 15,750.09, 21,735.06 and 8,676.51 is: 11,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,750.09 : 21,735.06 = 8,676.51 : x
  2. Step 2: Convert to fraction form
    15,750.09/21,735.06 = 8,676.51/x
  3. Step 3: Cross multiply
    15,750.09x = 21,735.06 × 8,676.51
  4. Step 4: Simplify right side
    15,750.09x = 188,584,465.44
  5. Step 5: Solve for x
    x = 188,584,465.44/15,750.09
  6. Step 6: Final answer
    x = 11,973.55

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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.