Home / 28,186.02-38,896.38-15,439.05

Finding the Fourth Proportional to 28,186.02, 38,896.38 and 15,439.05

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Solution

The fourth proportional to 28,186.02, 38,896.38 and 15,439.05 is: 21,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.02 : 38,896.38 = 15,439.05 : x
  2. Step 2: Convert to fraction form
    28,186.02/38,896.38 = 15,439.05/x
  3. Step 3: Cross multiply
    28,186.02x = 38,896.38 × 15,439.05
  4. Step 4: Simplify right side
    28,186.02x = 600,523,155.64
  5. Step 5: Solve for x
    x = 600,523,155.64/28,186.02
  6. Step 6: Final answer
    x = 21,305.71

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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.