Home / 26,416.80-39,654.36-20,905.56

Finding the Fourth Proportional to 26,416.80, 39,654.36 and 20,905.56

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Solution

The fourth proportional to 26,416.80, 39,654.36 and 20,905.56 is: 31,381.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,416.80 : 39,654.36 = 20,905.56 : x
  2. Step 2: Convert to fraction form
    26,416.80/39,654.36 = 20,905.56/x
  3. Step 3: Cross multiply
    26,416.80x = 39,654.36 × 20,905.56
  4. Step 4: Simplify right side
    26,416.80x = 828,996,602.24
  5. Step 5: Solve for x
    x = 828,996,602.24/26,416.80
  6. Step 6: Final answer
    x = 31,381.42

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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.