Home / 20,347.24-28,077.83-11,271.99

Finding the Fourth Proportional to 20,347.24, 28,077.83 and 11,271.99

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Solution

The fourth proportional to 20,347.24, 28,077.83 and 11,271.99 is: 15,554.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.24 : 28,077.83 = 11,271.99 : x
  2. Step 2: Convert to fraction form
    20,347.24/28,077.83 = 11,271.99/x
  3. Step 3: Cross multiply
    20,347.24x = 28,077.83 × 11,271.99
  4. Step 4: Simplify right side
    20,347.24x = 316,493,018.98
  5. Step 5: Solve for x
    x = 316,493,018.98/20,347.24
  6. Step 6: Final answer
    x = 15,554.59

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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.