Home / 21,191.58-29,177.70-17,998.02

Finding the Fourth Proportional to 21,191.58, 29,177.70 and 17,998.02

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Solution

The fourth proportional to 21,191.58, 29,177.70 and 17,998.02 is: 24,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.58 : 29,177.70 = 17,998.02 : x
  2. Step 2: Convert to fraction form
    21,191.58/29,177.70 = 17,998.02/x
  3. Step 3: Cross multiply
    21,191.58x = 29,177.70 × 17,998.02
  4. Step 4: Simplify right side
    21,191.58x = 525,140,828.15
  5. Step 5: Solve for x
    x = 525,140,828.15/21,191.58
  6. Step 6: Final answer
    x = 24,780.64

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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.