Home / 25,666.80-38,427.30-19,786.20

Finding the Fourth Proportional to 25,666.80, 38,427.30 and 19,786.20

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Solution

The fourth proportional to 25,666.80, 38,427.30 and 19,786.20 is: 29,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,666.80 : 38,427.30 = 19,786.20 : x
  2. Step 2: Convert to fraction form
    25,666.80/38,427.30 = 19,786.20/x
  3. Step 3: Cross multiply
    25,666.80x = 38,427.30 × 19,786.20
  4. Step 4: Simplify right side
    25,666.80x = 760,330,243.26
  5. Step 5: Solve for x
    x = 760,330,243.26/25,666.80
  6. Step 6: Final answer
    x = 29,623.10

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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.