Home / 20,417.77-30,618.74-7,936.15

Finding the Fourth Proportional to 20,417.77, 30,618.74 and 7,936.15

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Solution

The fourth proportional to 20,417.77, 30,618.74 and 7,936.15 is: 11,901.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.77 : 30,618.74 = 7,936.15 : x
  2. Step 2: Convert to fraction form
    20,417.77/30,618.74 = 7,936.15/x
  3. Step 3: Cross multiply
    20,417.77x = 30,618.74 × 7,936.15
  4. Step 4: Simplify right side
    20,417.77x = 242,994,720.68
  5. Step 5: Solve for x
    x = 242,994,720.68/20,417.77
  6. Step 6: Final answer
    x = 11,901.14

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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.