Home / 13,678.67-20,556.48-8,133.01

Finding the Fourth Proportional to 13,678.67, 20,556.48 and 8,133.01

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Solution

The fourth proportional to 13,678.67, 20,556.48 and 8,133.01 is: 12,222.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.67 : 20,556.48 = 8,133.01 : x
  2. Step 2: Convert to fraction form
    13,678.67/20,556.48 = 8,133.01/x
  3. Step 3: Cross multiply
    13,678.67x = 20,556.48 × 8,133.01
  4. Step 4: Simplify right side
    13,678.67x = 167,186,036.51
  5. Step 5: Solve for x
    x = 167,186,036.51/13,678.67
  6. Step 6: Final answer
    x = 12,222.39

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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.