Home / 25,606.20-38,438.10-19,788.60

Finding the Fourth Proportional to 25,606.20, 38,438.10 and 19,788.60

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Solution

The fourth proportional to 25,606.20, 38,438.10 and 19,788.60 is: 29,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,606.20 : 38,438.10 = 19,788.60 : x
  2. Step 2: Convert to fraction form
    25,606.20/38,438.10 = 19,788.60/x
  3. Step 3: Cross multiply
    25,606.20x = 38,438.10 × 19,788.60
  4. Step 4: Simplify right side
    25,606.20x = 760,636,185.66
  5. Step 5: Solve for x
    x = 760,636,185.66/25,606.20
  6. Step 6: Final answer
    x = 29,705.16

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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.