Home / 28,122.96-38,811.24-15,547.44

Finding the Fourth Proportional to 28,122.96, 38,811.24 and 15,547.44

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Solution

The fourth proportional to 28,122.96, 38,811.24 and 15,547.44 is: 21,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.96 : 38,811.24 = 15,547.44 : x
  2. Step 2: Convert to fraction form
    28,122.96/38,811.24 = 15,547.44/x
  3. Step 3: Cross multiply
    28,122.96x = 38,811.24 × 15,547.44
  4. Step 4: Simplify right side
    28,122.96x = 603,415,425.23
  5. Step 5: Solve for x
    x = 603,415,425.23/28,122.96
  6. Step 6: Final answer
    x = 21,456.33

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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.