Home / 20,555.61-28,372.23-11,608.35

Finding the Fourth Proportional to 20,555.61, 28,372.23 and 11,608.35

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Solution

The fourth proportional to 20,555.61, 28,372.23 and 11,608.35 is: 16,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.61 : 28,372.23 = 11,608.35 : x
  2. Step 2: Convert to fraction form
    20,555.61/28,372.23 = 11,608.35/x
  3. Step 3: Cross multiply
    20,555.61x = 28,372.23 × 11,608.35
  4. Step 4: Simplify right side
    20,555.61x = 329,354,818.03
  5. Step 5: Solve for x
    x = 329,354,818.03/20,555.61
  6. Step 6: Final answer
    x = 16,022.62

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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.