Home / 20,807.02-28,713.96-11,375.59

Finding the Fourth Proportional to 20,807.02, 28,713.96 and 11,375.59

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Solution

The fourth proportional to 20,807.02, 28,713.96 and 11,375.59 is: 15,698.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.02 : 28,713.96 = 11,375.59 : x
  2. Step 2: Convert to fraction form
    20,807.02/28,713.96 = 11,375.59/x
  3. Step 3: Cross multiply
    20,807.02x = 28,713.96 × 11,375.59
  4. Step 4: Simplify right side
    20,807.02x = 326,638,236.24
  5. Step 5: Solve for x
    x = 326,638,236.24/20,807.02
  6. Step 6: Final answer
    x = 15,698.46

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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.