Home / 13,685.43-20,528.05-5,359.58

Finding the Fourth Proportional to 13,685.43, 20,528.05 and 5,359.58

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Solution

The fourth proportional to 13,685.43, 20,528.05 and 5,359.58 is: 8,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.43 : 20,528.05 = 5,359.58 : x
  2. Step 2: Convert to fraction form
    13,685.43/20,528.05 = 5,359.58/x
  3. Step 3: Cross multiply
    13,685.43x = 20,528.05 × 5,359.58
  4. Step 4: Simplify right side
    13,685.43x = 110,021,726.22
  5. Step 5: Solve for x
    x = 110,021,726.22/13,685.43
  6. Step 6: Final answer
    x = 8,039.33

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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.