Home / 20,953.26-28,915.47-12,003.66

Finding the Fourth Proportional to 20,953.26, 28,915.47 and 12,003.66

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Solution

The fourth proportional to 20,953.26, 28,915.47 and 12,003.66 is: 16,565.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.26 : 28,915.47 = 12,003.66 : x
  2. Step 2: Convert to fraction form
    20,953.26/28,915.47 = 12,003.66/x
  3. Step 3: Cross multiply
    20,953.26x = 28,915.47 × 12,003.66
  4. Step 4: Simplify right side
    20,953.26x = 347,091,470.62
  5. Step 5: Solve for x
    x = 347,091,470.62/20,953.26
  6. Step 6: Final answer
    x = 16,565.03

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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.