Home / 27,840.92-38,427.51-15,911.27

Finding the Fourth Proportional to 27,840.92, 38,427.51 and 15,911.27

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Solution

The fourth proportional to 27,840.92, 38,427.51 and 15,911.27 is: 21,961.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.92 : 38,427.51 = 15,911.27 : x
  2. Step 2: Convert to fraction form
    27,840.92/38,427.51 = 15,911.27/x
  3. Step 3: Cross multiply
    27,840.92x = 38,427.51 × 15,911.27
  4. Step 4: Simplify right side
    27,840.92x = 611,430,498.67
  5. Step 5: Solve for x
    x = 611,430,498.67/27,840.92
  6. Step 6: Final answer
    x = 21,961.58

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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.