Home / 20,535.87-28,351.71-13,474.62

Finding the Fourth Proportional to 20,535.87, 28,351.71 and 13,474.62

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Solution

The fourth proportional to 20,535.87, 28,351.71 and 13,474.62 is: 18,602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.87 : 28,351.71 = 13,474.62 : x
  2. Step 2: Convert to fraction form
    20,535.87/28,351.71 = 13,474.62/x
  3. Step 3: Cross multiply
    20,535.87x = 28,351.71 × 13,474.62
  4. Step 4: Simplify right side
    20,535.87x = 382,028,518.60
  5. Step 5: Solve for x
    x = 382,028,518.60/20,535.87
  6. Step 6: Final answer
    x = 18,602.99

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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.