Home / 28,910.26-39,888.06-18,156.30

Finding the Fourth Proportional to 28,910.26, 39,888.06 and 18,156.30

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Solution

The fourth proportional to 28,910.26, 39,888.06 and 18,156.30 is: 25,050.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.26 : 39,888.06 = 18,156.30 : x
  2. Step 2: Convert to fraction form
    28,910.26/39,888.06 = 18,156.30/x
  3. Step 3: Cross multiply
    28,910.26x = 39,888.06 × 18,156.30
  4. Step 4: Simplify right side
    28,910.26x = 724,219,583.78
  5. Step 5: Solve for x
    x = 724,219,583.78/28,910.26
  6. Step 6: Final answer
    x = 25,050.61

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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.