Home / 27,688.55-38,213.85-15,749.58

Finding the Fourth Proportional to 27,688.55, 38,213.85 and 15,749.58

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Solution

The fourth proportional to 27,688.55, 38,213.85 and 15,749.58 is: 21,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.55 : 38,213.85 = 15,749.58 : x
  2. Step 2: Convert to fraction form
    27,688.55/38,213.85 = 15,749.58/x
  3. Step 3: Cross multiply
    27,688.55x = 38,213.85 × 15,749.58
  4. Step 4: Simplify right side
    27,688.55x = 601,852,087.68
  5. Step 5: Solve for x
    x = 601,852,087.68/27,688.55
  6. Step 6: Final answer
    x = 21,736.50

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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.