Home / 20,554.34-28,364.99-11,122.88

Finding the Fourth Proportional to 20,554.34, 28,364.99 and 11,122.88

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Solution

The fourth proportional to 20,554.34, 28,364.99 and 11,122.88 is: 15,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.34 : 28,364.99 = 11,122.88 : x
  2. Step 2: Convert to fraction form
    20,554.34/28,364.99 = 11,122.88/x
  3. Step 3: Cross multiply
    20,554.34x = 28,364.99 × 11,122.88
  4. Step 4: Simplify right side
    20,554.34x = 315,500,182.53
  5. Step 5: Solve for x
    x = 315,500,182.53/20,554.34
  6. Step 6: Final answer
    x = 15,349.57

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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.