Home / 21,106.24-29,122.14-12,606.10

Finding the Fourth Proportional to 21,106.24, 29,122.14 and 12,606.10

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Solution

The fourth proportional to 21,106.24, 29,122.14 and 12,606.10 is: 17,393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.24 : 29,122.14 = 12,606.10 : x
  2. Step 2: Convert to fraction form
    21,106.24/29,122.14 = 12,606.10/x
  3. Step 3: Cross multiply
    21,106.24x = 29,122.14 × 12,606.10
  4. Step 4: Simplify right side
    21,106.24x = 367,116,609.05
  5. Step 5: Solve for x
    x = 367,116,609.05/21,106.24
  6. Step 6: Final answer
    x = 17,393.75

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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.