Home / 27,138.60-37,440.72-15,806.16

Finding the Fourth Proportional to 27,138.60, 37,440.72 and 15,806.16

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Solution

The fourth proportional to 27,138.60, 37,440.72 and 15,806.16 is: 21,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.60 : 37,440.72 = 15,806.16 : x
  2. Step 2: Convert to fraction form
    27,138.60/37,440.72 = 15,806.16/x
  3. Step 3: Cross multiply
    27,138.60x = 37,440.72 × 15,806.16
  4. Step 4: Simplify right side
    27,138.60x = 591,794,010.84
  5. Step 5: Solve for x
    x = 591,794,010.84/27,138.60
  6. Step 6: Final answer
    x = 21,806.36

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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.