Home / 22,556.93-31,128.63-12,486.07

Finding the Fourth Proportional to 22,556.93, 31,128.63 and 12,486.07

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Solution

The fourth proportional to 22,556.93, 31,128.63 and 12,486.07 is: 17,230.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,556.93 : 31,128.63 = 12,486.07 : x
  2. Step 2: Convert to fraction form
    22,556.93/31,128.63 = 12,486.07/x
  3. Step 3: Cross multiply
    22,556.93x = 31,128.63 × 12,486.07
  4. Step 4: Simplify right side
    22,556.93x = 388,674,253.18
  5. Step 5: Solve for x
    x = 388,674,253.18/22,556.93
  6. Step 6: Final answer
    x = 17,230.81

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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.