Home / 21,789.90-30,064.23-12,358.26

Finding the Fourth Proportional to 21,789.90, 30,064.23 and 12,358.26

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Solution

The fourth proportional to 21,789.90, 30,064.23 and 12,358.26 is: 17,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.90 : 30,064.23 = 12,358.26 : x
  2. Step 2: Convert to fraction form
    21,789.90/30,064.23 = 12,358.26/x
  3. Step 3: Cross multiply
    21,789.90x = 30,064.23 × 12,358.26
  4. Step 4: Simplify right side
    21,789.90x = 371,541,571.04
  5. Step 5: Solve for x
    x = 371,541,571.04/21,789.90
  6. Step 6: Final answer
    x = 17,051.09

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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.