Home / 28,976.03-39,999.22-18,913.10

Finding the Fourth Proportional to 28,976.03, 39,999.22 and 18,913.10

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Solution

The fourth proportional to 28,976.03, 39,999.22 and 18,913.10 is: 26,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.03 : 39,999.22 = 18,913.10 : x
  2. Step 2: Convert to fraction form
    28,976.03/39,999.22 = 18,913.10/x
  3. Step 3: Cross multiply
    28,976.03x = 39,999.22 × 18,913.10
  4. Step 4: Simplify right side
    28,976.03x = 756,509,000.50
  5. Step 5: Solve for x
    x = 756,509,000.50/28,976.03
  6. Step 6: Final answer
    x = 26,108.10

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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.