Home / 12,717.21-17,556.36-9,878.24

Finding the Fourth Proportional to 12,717.21, 17,556.36 and 9,878.24

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Solution

The fourth proportional to 12,717.21, 17,556.36 and 9,878.24 is: 13,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.21 : 17,556.36 = 9,878.24 : x
  2. Step 2: Convert to fraction form
    12,717.21/17,556.36 = 9,878.24/x
  3. Step 3: Cross multiply
    12,717.21x = 17,556.36 × 9,878.24
  4. Step 4: Simplify right side
    12,717.21x = 173,425,849.82
  5. Step 5: Solve for x
    x = 173,425,849.82/12,717.21
  6. Step 6: Final answer
    x = 13,637.10

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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.