Home / 28,249.36-38,984.49-15,502.64

Finding the Fourth Proportional to 28,249.36, 38,984.49 and 15,502.64

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Solution

The fourth proportional to 28,249.36, 38,984.49 and 15,502.64 is: 21,393.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.36 : 38,984.49 = 15,502.64 : x
  2. Step 2: Convert to fraction form
    28,249.36/38,984.49 = 15,502.64/x
  3. Step 3: Cross multiply
    28,249.36x = 38,984.49 × 15,502.64
  4. Step 4: Simplify right side
    28,249.36x = 604,362,538.42
  5. Step 5: Solve for x
    x = 604,362,538.42/28,249.36
  6. Step 6: Final answer
    x = 21,393.85

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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.