Home / 27,687.55-38,212.47-15,748.58

Finding the Fourth Proportional to 27,687.55, 38,212.47 and 15,748.58

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Solution

The fourth proportional to 27,687.55, 38,212.47 and 15,748.58 is: 21,735.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.55 : 38,212.47 = 15,748.58 : x
  2. Step 2: Convert to fraction form
    27,687.55/38,212.47 = 15,748.58/x
  3. Step 3: Cross multiply
    27,687.55x = 38,212.47 × 15,748.58
  4. Step 4: Simplify right side
    27,687.55x = 601,792,140.79
  5. Step 5: Solve for x
    x = 601,792,140.79/27,687.55
  6. Step 6: Final answer
    x = 21,735.12

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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.