Home / 21,106.02-31,638.36-17,165.34

Finding the Fourth Proportional to 21,106.02, 31,638.36 and 17,165.34

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Solution

The fourth proportional to 21,106.02, 31,638.36 and 17,165.34 is: 25,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.02 : 31,638.36 = 17,165.34 : x
  2. Step 2: Convert to fraction form
    21,106.02/31,638.36 = 17,165.34/x
  3. Step 3: Cross multiply
    21,106.02x = 31,638.36 × 17,165.34
  4. Step 4: Simplify right side
    21,106.02x = 543,083,206.44
  5. Step 5: Solve for x
    x = 543,083,206.44/21,106.02
  6. Step 6: Final answer
    x = 25,731.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.