Home / 20,629.48-30,875.76-18,784.84

Finding the Fourth Proportional to 20,629.48, 30,875.76 and 18,784.84

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Solution

The fourth proportional to 20,629.48, 30,875.76 and 18,784.84 is: 28,114.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.48 : 30,875.76 = 18,784.84 : x
  2. Step 2: Convert to fraction form
    20,629.48/30,875.76 = 18,784.84/x
  3. Step 3: Cross multiply
    20,629.48x = 30,875.76 × 18,784.84
  4. Step 4: Simplify right side
    20,629.48x = 579,996,211.48
  5. Step 5: Solve for x
    x = 579,996,211.48/20,629.48
  6. Step 6: Final answer
    x = 28,114.92

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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.