Home / 28,125.45-38,813.16-15,378.69

Finding the Fourth Proportional to 28,125.45, 38,813.16 and 15,378.69

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Solution

The fourth proportional to 28,125.45, 38,813.16 and 15,378.69 is: 21,222.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.45 : 38,813.16 = 15,378.69 : x
  2. Step 2: Convert to fraction form
    28,125.45/38,813.16 = 15,378.69/x
  3. Step 3: Cross multiply
    28,125.45x = 38,813.16 × 15,378.69
  4. Step 4: Simplify right side
    28,125.45x = 596,895,497.89
  5. Step 5: Solve for x
    x = 596,895,497.89/28,125.45
  6. Step 6: Final answer
    x = 21,222.61

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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.