Home / 20,471.94-28,237.14-12,518.08

Finding the Fourth Proportional to 20,471.94, 28,237.14 and 12,518.08

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Solution

The fourth proportional to 20,471.94, 28,237.14 and 12,518.08 is: 17,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.94 : 28,237.14 = 12,518.08 : x
  2. Step 2: Convert to fraction form
    20,471.94/28,237.14 = 12,518.08/x
  3. Step 3: Cross multiply
    20,471.94x = 28,237.14 × 12,518.08
  4. Step 4: Simplify right side
    20,471.94x = 353,474,706.90
  5. Step 5: Solve for x
    x = 353,474,706.90/20,471.94
  6. Step 6: Final answer
    x = 17,266.30

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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.