Home / 20,674.28-28,531.76-12,182.07

Finding the Fourth Proportional to 20,674.28, 28,531.76 and 12,182.07

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Solution

The fourth proportional to 20,674.28, 28,531.76 and 12,182.07 is: 16,811.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.28 : 28,531.76 = 12,182.07 : x
  2. Step 2: Convert to fraction form
    20,674.28/28,531.76 = 12,182.07/x
  3. Step 3: Cross multiply
    20,674.28x = 28,531.76 × 12,182.07
  4. Step 4: Simplify right side
    20,674.28x = 347,575,693.97
  5. Step 5: Solve for x
    x = 347,575,693.97/20,674.28
  6. Step 6: Final answer
    x = 16,811.99

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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.