Home / 19,820.73-29,736.05-13,988.73

Finding the Fourth Proportional to 19,820.73, 29,736.05 and 13,988.73

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Solution

The fourth proportional to 19,820.73, 29,736.05 and 13,988.73 is: 20,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.73 : 29,736.05 = 13,988.73 : x
  2. Step 2: Convert to fraction form
    19,820.73/29,736.05 = 13,988.73/x
  3. Step 3: Cross multiply
    19,820.73x = 29,736.05 × 13,988.73
  4. Step 4: Simplify right side
    19,820.73x = 415,969,574.72
  5. Step 5: Solve for x
    x = 415,969,574.72/19,820.73
  6. Step 6: Final answer
    x = 20,986.59

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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.