Home / 20,833.56-28,663.02-18,187.08

Finding the Fourth Proportional to 20,833.56, 28,663.02 and 18,187.08

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Solution

The fourth proportional to 20,833.56, 28,663.02 and 18,187.08 is: 25,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.56 : 28,663.02 = 18,187.08 : x
  2. Step 2: Convert to fraction form
    20,833.56/28,663.02 = 18,187.08/x
  3. Step 3: Cross multiply
    20,833.56x = 28,663.02 × 18,187.08
  4. Step 4: Simplify right side
    20,833.56x = 521,296,637.78
  5. Step 5: Solve for x
    x = 521,296,637.78/20,833.56
  6. Step 6: Final answer
    x = 25,021.97

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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.