Home / 21,556.80-29,748.63-12,125.28

Finding the Fourth Proportional to 21,556.80, 29,748.63 and 12,125.28

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Solution

The fourth proportional to 21,556.80, 29,748.63 and 12,125.28 is: 16,733.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.80 : 29,748.63 = 12,125.28 : x
  2. Step 2: Convert to fraction form
    21,556.80/29,748.63 = 12,125.28/x
  3. Step 3: Cross multiply
    21,556.80x = 29,748.63 × 12,125.28
  4. Step 4: Simplify right side
    21,556.80x = 360,710,468.37
  5. Step 5: Solve for x
    x = 360,710,468.37/21,556.80
  6. Step 6: Final answer
    x = 16,733.02

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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.