Home / 21,031.10-29,021.90-12,533.03

Finding the Fourth Proportional to 21,031.10, 29,021.90 and 12,533.03

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Solution

The fourth proportional to 21,031.10, 29,021.90 and 12,533.03 is: 17,294.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.10 : 29,021.90 = 12,533.03 : x
  2. Step 2: Convert to fraction form
    21,031.10/29,021.90 = 12,533.03/x
  3. Step 3: Cross multiply
    21,031.10x = 29,021.90 × 12,533.03
  4. Step 4: Simplify right side
    21,031.10x = 363,732,244.41
  5. Step 5: Solve for x
    x = 363,732,244.41/21,031.10
  6. Step 6: Final answer
    x = 17,294.97

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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.