Home / 27,688.13-38,205.48-15,586.86

Finding the Fourth Proportional to 27,688.13, 38,205.48 and 15,586.86

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Solution

The fourth proportional to 27,688.13, 38,205.48 and 15,586.86 is: 21,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.13 : 38,205.48 = 15,586.86 : x
  2. Step 2: Convert to fraction form
    27,688.13/38,205.48 = 15,586.86/x
  3. Step 3: Cross multiply
    27,688.13x = 38,205.48 × 15,586.86
  4. Step 4: Simplify right side
    27,688.13x = 595,503,467.99
  5. Step 5: Solve for x
    x = 595,503,467.99/27,688.13
  6. Step 6: Final answer
    x = 21,507.54

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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.