Home / 27,722.98-38,255.58-15,783.94

Finding the Fourth Proportional to 27,722.98, 38,255.58 and 15,783.94

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Solution

The fourth proportional to 27,722.98, 38,255.58 and 15,783.94 is: 21,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.98 : 38,255.58 = 15,783.94 : x
  2. Step 2: Convert to fraction form
    27,722.98/38,255.58 = 15,783.94/x
  3. Step 3: Cross multiply
    27,722.98x = 38,255.58 × 15,783.94
  4. Step 4: Simplify right side
    27,722.98x = 603,823,779.39
  5. Step 5: Solve for x
    x = 603,823,779.39/27,722.98
  6. Step 6: Final answer
    x = 21,780.62

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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.