Home / 25,409.58-38,137.62-12,938.22

Finding the Fourth Proportional to 25,409.58, 38,137.62 and 12,938.22

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Solution

The fourth proportional to 25,409.58, 38,137.62 and 12,938.22 is: 19,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.58 : 38,137.62 = 12,938.22 : x
  2. Step 2: Convert to fraction form
    25,409.58/38,137.62 = 12,938.22/x
  3. Step 3: Cross multiply
    25,409.58x = 38,137.62 × 12,938.22
  4. Step 4: Simplify right side
    25,409.58x = 493,432,917.84
  5. Step 5: Solve for x
    x = 493,432,917.84/25,409.58
  6. Step 6: Final answer
    x = 19,419.17

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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.