Home / 20,660.01-28,510.30-12,047.76

Finding the Fourth Proportional to 20,660.01, 28,510.30 and 12,047.76

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Solution

The fourth proportional to 20,660.01, 28,510.30 and 12,047.76 is: 16,625.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.01 : 28,510.30 = 12,047.76 : x
  2. Step 2: Convert to fraction form
    20,660.01/28,510.30 = 12,047.76/x
  3. Step 3: Cross multiply
    20,660.01x = 28,510.30 × 12,047.76
  4. Step 4: Simplify right side
    20,660.01x = 343,485,266.99
  5. Step 5: Solve for x
    x = 343,485,266.99/20,660.01
  6. Step 6: Final answer
    x = 16,625.61

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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.