Home / 21,763.33-30,031.14-12,810.31

Finding the Fourth Proportional to 21,763.33, 30,031.14 and 12,810.31

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Solution

The fourth proportional to 21,763.33, 30,031.14 and 12,810.31 is: 17,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.33 : 30,031.14 = 12,810.31 : x
  2. Step 2: Convert to fraction form
    21,763.33/30,031.14 = 12,810.31/x
  3. Step 3: Cross multiply
    21,763.33x = 30,031.14 × 12,810.31
  4. Step 4: Simplify right side
    21,763.33x = 384,708,213.05
  5. Step 5: Solve for x
    x = 384,708,213.05/21,763.33
  6. Step 6: Final answer
    x = 17,676.90

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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.