Home / 20,882.46-28,813.43-13,323.98

Finding the Fourth Proportional to 20,882.46, 28,813.43 and 13,323.98

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Solution

The fourth proportional to 20,882.46, 28,813.43 and 13,323.98 is: 18,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.46 : 28,813.43 = 13,323.98 : x
  2. Step 2: Convert to fraction form
    20,882.46/28,813.43 = 13,323.98/x
  3. Step 3: Cross multiply
    20,882.46x = 28,813.43 × 13,323.98
  4. Step 4: Simplify right side
    20,882.46x = 383,909,354.36
  5. Step 5: Solve for x
    x = 383,909,354.36/20,882.46
  6. Step 6: Final answer
    x = 18,384.30

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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.