Home / 27,578.81-38,060.21-20,852.88

Finding the Fourth Proportional to 27,578.81, 38,060.21 and 20,852.88

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Solution

The fourth proportional to 27,578.81, 38,060.21 and 20,852.88 is: 28,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,578.81 : 38,060.21 = 20,852.88 : x
  2. Step 2: Convert to fraction form
    27,578.81/38,060.21 = 20,852.88/x
  3. Step 3: Cross multiply
    27,578.81x = 38,060.21 × 20,852.88
  4. Step 4: Simplify right side
    27,578.81x = 793,664,887.64
  5. Step 5: Solve for x
    x = 793,664,887.64/27,578.81
  6. Step 6: Final answer
    x = 28,778.07

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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.