Home / 14,987.05-20,668.78-9,676.28

Finding the Fourth Proportional to 14,987.05, 20,668.78 and 9,676.28

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Solution

The fourth proportional to 14,987.05, 20,668.78 and 9,676.28 is: 13,344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.05 : 20,668.78 = 9,676.28 : x
  2. Step 2: Convert to fraction form
    14,987.05/20,668.78 = 9,676.28/x
  3. Step 3: Cross multiply
    14,987.05x = 20,668.78 × 9,676.28
  4. Step 4: Simplify right side
    14,987.05x = 199,996,902.54
  5. Step 5: Solve for x
    x = 199,996,902.54/14,987.05
  6. Step 6: Final answer
    x = 13,344.65

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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.