Home / 19,836.81-29,755.07-18,681.35

Finding the Fourth Proportional to 19,836.81, 29,755.07 and 18,681.35

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Solution

The fourth proportional to 19,836.81, 29,755.07 and 18,681.35 is: 28,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,836.81 : 29,755.07 = 18,681.35 : x
  2. Step 2: Convert to fraction form
    19,836.81/29,755.07 = 18,681.35/x
  3. Step 3: Cross multiply
    19,836.81x = 29,755.07 × 18,681.35
  4. Step 4: Simplify right side
    19,836.81x = 555,864,634.76
  5. Step 5: Solve for x
    x = 555,864,634.76/19,836.81
  6. Step 6: Final answer
    x = 28,021.88

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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.