Home / 20,321.64-30,634.77-18,966.93

Finding the Fourth Proportional to 20,321.64, 30,634.77 and 18,966.93

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Solution

The fourth proportional to 20,321.64, 30,634.77 and 18,966.93 is: 28,592.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.64 : 30,634.77 = 18,966.93 : x
  2. Step 2: Convert to fraction form
    20,321.64/30,634.77 = 18,966.93/x
  3. Step 3: Cross multiply
    20,321.64x = 30,634.77 × 18,966.93
  4. Step 4: Simplify right side
    20,321.64x = 581,047,538.16
  5. Step 5: Solve for x
    x = 581,047,538.16/20,321.64
  6. Step 6: Final answer
    x = 28,592.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.