Home / 28,636.79-42,971.99-11,995.56

Finding the Fourth Proportional to 28,636.79, 42,971.99 and 11,995.56

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Solution

The fourth proportional to 28,636.79, 42,971.99 and 11,995.56 is: 18,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.79 : 42,971.99 = 11,995.56 : x
  2. Step 2: Convert to fraction form
    28,636.79/42,971.99 = 11,995.56/x
  3. Step 3: Cross multiply
    28,636.79x = 42,971.99 × 11,995.56
  4. Step 4: Simplify right side
    28,636.79x = 515,473,024.39
  5. Step 5: Solve for x
    x = 515,473,024.39/28,636.79
  6. Step 6: Final answer
    x = 18,000.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.