Home / 21,348.20-32,182.43-19,920.98

Finding the Fourth Proportional to 21,348.20, 32,182.43 and 19,920.98

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Solution

The fourth proportional to 21,348.20, 32,182.43 and 19,920.98 is: 30,030.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.20 : 32,182.43 = 19,920.98 : x
  2. Step 2: Convert to fraction form
    21,348.20/32,182.43 = 19,920.98/x
  3. Step 3: Cross multiply
    21,348.20x = 32,182.43 × 19,920.98
  4. Step 4: Simplify right side
    21,348.20x = 641,105,544.38
  5. Step 5: Solve for x
    x = 641,105,544.38/21,348.20
  6. Step 6: Final answer
    x = 30,030.89

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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.