Home / 25,838.96-38,768.49-20,887.45

Finding the Fourth Proportional to 25,838.96, 38,768.49 and 20,887.45

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Solution

The fourth proportional to 25,838.96, 38,768.49 and 20,887.45 is: 31,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,838.96 : 38,768.49 = 20,887.45 : x
  2. Step 2: Convert to fraction form
    25,838.96/38,768.49 = 20,887.45/x
  3. Step 3: Cross multiply
    25,838.96x = 38,768.49 × 20,887.45
  4. Step 4: Simplify right side
    25,838.96x = 809,774,799.53
  5. Step 5: Solve for x
    x = 809,774,799.53/25,838.96
  6. Step 6: Final answer
    x = 31,339.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.