Home / 21,556.62-29,748.16-12,125.40

Finding the Fourth Proportional to 21,556.62, 29,748.16 and 12,125.40

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Solution

The fourth proportional to 21,556.62, 29,748.16 and 12,125.40 is: 16,733.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.62 : 29,748.16 = 12,125.40 : x
  2. Step 2: Convert to fraction form
    21,556.62/29,748.16 = 12,125.40/x
  3. Step 3: Cross multiply
    21,556.62x = 29,748.16 × 12,125.40
  4. Step 4: Simplify right side
    21,556.62x = 360,708,339.26
  5. Step 5: Solve for x
    x = 360,708,339.26/21,556.62
  6. Step 6: Final answer
    x = 16,733.07

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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.