Home / 28,235.07-38,965.14-15,488.82

Finding the Fourth Proportional to 28,235.07, 38,965.14 and 15,488.82

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Solution

The fourth proportional to 28,235.07, 38,965.14 and 15,488.82 is: 21,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.07 : 38,965.14 = 15,488.82 : x
  2. Step 2: Convert to fraction form
    28,235.07/38,965.14 = 15,488.82/x
  3. Step 3: Cross multiply
    28,235.07x = 38,965.14 × 15,488.82
  4. Step 4: Simplify right side
    28,235.07x = 603,524,039.73
  5. Step 5: Solve for x
    x = 603,524,039.73/28,235.07
  6. Step 6: Final answer
    x = 21,374.98

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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.