Home / 25,578.98-38,362.40-9,778.21

Finding the Fourth Proportional to 25,578.98, 38,362.40 and 9,778.21

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Solution

The fourth proportional to 25,578.98, 38,362.40 and 9,778.21 is: 14,664.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,578.98 : 38,362.40 = 9,778.21 : x
  2. Step 2: Convert to fraction form
    25,578.98/38,362.40 = 9,778.21/x
  3. Step 3: Cross multiply
    25,578.98x = 38,362.40 × 9,778.21
  4. Step 4: Simplify right side
    25,578.98x = 375,115,603.30
  5. Step 5: Solve for x
    x = 375,115,603.30/25,578.98
  6. Step 6: Final answer
    x = 14,664.99

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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.