Home / 20,835.02-28,751.22-11,401.76

Finding the Fourth Proportional to 20,835.02, 28,751.22 and 11,401.76

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Solution

The fourth proportional to 20,835.02, 28,751.22 and 11,401.76 is: 15,733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.02 : 28,751.22 = 11,401.76 : x
  2. Step 2: Convert to fraction form
    20,835.02/28,751.22 = 11,401.76/x
  3. Step 3: Cross multiply
    20,835.02x = 28,751.22 × 11,401.76
  4. Step 4: Simplify right side
    20,835.02x = 327,814,510.15
  5. Step 5: Solve for x
    x = 327,814,510.15/20,835.02
  6. Step 6: Final answer
    x = 15,733.82

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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.