Home / 20,583.02-28,382.01-13,399.68

Finding the Fourth Proportional to 20,583.02, 28,382.01 and 13,399.68

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Solution

The fourth proportional to 20,583.02, 28,382.01 and 13,399.68 is: 18,476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.02 : 28,382.01 = 13,399.68 : x
  2. Step 2: Convert to fraction form
    20,583.02/28,382.01 = 13,399.68/x
  3. Step 3: Cross multiply
    20,583.02x = 28,382.01 × 13,399.68
  4. Step 4: Simplify right side
    20,583.02x = 380,309,851.76
  5. Step 5: Solve for x
    x = 380,309,851.76/20,583.02
  6. Step 6: Final answer
    x = 18,476.88

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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.