Home / 27,813.42-38,385.26-15,878.54

Finding the Fourth Proportional to 27,813.42, 38,385.26 and 15,878.54

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Solution

The fourth proportional to 27,813.42, 38,385.26 and 15,878.54 is: 21,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.42 : 38,385.26 = 15,878.54 : x
  2. Step 2: Convert to fraction form
    27,813.42/38,385.26 = 15,878.54/x
  3. Step 3: Cross multiply
    27,813.42x = 38,385.26 × 15,878.54
  4. Step 4: Simplify right side
    27,813.42x = 609,501,615.00
  5. Step 5: Solve for x
    x = 609,501,615.00/27,813.42
  6. Step 6: Final answer
    x = 21,913.94

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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.