Home / 28,187.07-38,898.03-15,611.82

Finding the Fourth Proportional to 28,187.07, 38,898.03 and 15,611.82

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Solution

The fourth proportional to 28,187.07, 38,898.03 and 15,611.82 is: 21,544.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.07 : 38,898.03 = 15,611.82 : x
  2. Step 2: Convert to fraction form
    28,187.07/38,898.03 = 15,611.82/x
  3. Step 3: Cross multiply
    28,187.07x = 38,898.03 × 15,611.82
  4. Step 4: Simplify right side
    28,187.07x = 607,269,042.71
  5. Step 5: Solve for x
    x = 607,269,042.71/28,187.07
  6. Step 6: Final answer
    x = 21,544.24

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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.