Home / 27,721.98-38,254.20-15,782.94

Finding the Fourth Proportional to 27,721.98, 38,254.20 and 15,782.94

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Solution

The fourth proportional to 27,721.98, 38,254.20 and 15,782.94 is: 21,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.98 : 38,254.20 = 15,782.94 : x
  2. Step 2: Convert to fraction form
    27,721.98/38,254.20 = 15,782.94/x
  3. Step 3: Cross multiply
    27,721.98x = 38,254.20 × 15,782.94
  4. Step 4: Simplify right side
    27,721.98x = 603,763,743.35
  5. Step 5: Solve for x
    x = 603,763,743.35/27,721.98
  6. Step 6: Final answer
    x = 21,779.24

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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.