Home / 13,685.38-20,528.94-5,786.42

Finding the Fourth Proportional to 13,685.38, 20,528.94 and 5,786.42

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Solution

The fourth proportional to 13,685.38, 20,528.94 and 5,786.42 is: 8,680.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.38 : 20,528.94 = 5,786.42 : x
  2. Step 2: Convert to fraction form
    13,685.38/20,528.94 = 5,786.42/x
  3. Step 3: Cross multiply
    13,685.38x = 20,528.94 × 5,786.42
  4. Step 4: Simplify right side
    13,685.38x = 118,789,068.99
  5. Step 5: Solve for x
    x = 118,789,068.99/13,685.38
  6. Step 6: Final answer
    x = 8,680.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.