Home / 25,420.98-38,146-19,858.70

Finding the Fourth Proportional to 25,420.98, 38,146 and 19,858.70

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Solution

The fourth proportional to 25,420.98, 38,146 and 19,858.70 is: 29,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.98 : 38,146 = 19,858.70 : x
  2. Step 2: Convert to fraction form
    25,420.98/38,146 = 19,858.70/x
  3. Step 3: Cross multiply
    25,420.98x = 38,146 × 19,858.70
  4. Step 4: Simplify right side
    25,420.98x = 757,529,970.20
  5. Step 5: Solve for x
    x = 757,529,970.20/25,420.98
  6. Step 6: Final answer
    x = 29,799.40

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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.