Home / 12,501.14-18,755.81-5,111.81

Finding the Fourth Proportional to 12,501.14, 18,755.81 and 5,111.81

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Solution

The fourth proportional to 12,501.14, 18,755.81 and 5,111.81 is: 7,669.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,501.14 : 18,755.81 = 5,111.81 : x
  2. Step 2: Convert to fraction form
    12,501.14/18,755.81 = 5,111.81/x
  3. Step 3: Cross multiply
    12,501.14x = 18,755.81 × 5,111.81
  4. Step 4: Simplify right side
    12,501.14x = 95,876,017.78
  5. Step 5: Solve for x
    x = 95,876,017.78/12,501.14
  6. Step 6: Final answer
    x = 7,669.39

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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.