Home / 28,836.18-39,771.54-18,221.94

Finding the Fourth Proportional to 28,836.18, 39,771.54 and 18,221.94

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Solution

The fourth proportional to 28,836.18, 39,771.54 and 18,221.94 is: 25,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,836.18 : 39,771.54 = 18,221.94 : x
  2. Step 2: Convert to fraction form
    28,836.18/39,771.54 = 18,221.94/x
  3. Step 3: Cross multiply
    28,836.18x = 39,771.54 × 18,221.94
  4. Step 4: Simplify right side
    28,836.18x = 724,714,615.59
  5. Step 5: Solve for x
    x = 724,714,615.59/28,836.18
  6. Step 6: Final answer
    x = 25,132.13

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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.