Home / 21,983.60-30,346.44-15,704.48

Finding the Fourth Proportional to 21,983.60, 30,346.44 and 15,704.48

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Solution

The fourth proportional to 21,983.60, 30,346.44 and 15,704.48 is: 21,678.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.60 : 30,346.44 = 15,704.48 : x
  2. Step 2: Convert to fraction form
    21,983.60/30,346.44 = 15,704.48/x
  3. Step 3: Cross multiply
    21,983.60x = 30,346.44 × 15,704.48
  4. Step 4: Simplify right side
    21,983.60x = 476,575,060.05
  5. Step 5: Solve for x
    x = 476,575,060.05/21,983.60
  6. Step 6: Final answer
    x = 21,678.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.