Home / 17,821.80-26,790.30-12,663.40

Finding the Fourth Proportional to 17,821.80, 26,790.30 and 12,663.40

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Solution

The fourth proportional to 17,821.80, 26,790.30 and 12,663.40 is: 19,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,821.80 : 26,790.30 = 12,663.40 : x
  2. Step 2: Convert to fraction form
    17,821.80/26,790.30 = 12,663.40/x
  3. Step 3: Cross multiply
    17,821.80x = 26,790.30 × 12,663.40
  4. Step 4: Simplify right side
    17,821.80x = 339,256,285.02
  5. Step 5: Solve for x
    x = 339,256,285.02/17,821.80
  6. Step 6: Final answer
    x = 19,036.03

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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.