Home / 20,671.83-28,528.07-11,719.17

Finding the Fourth Proportional to 20,671.83, 28,528.07 and 11,719.17

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Solution

The fourth proportional to 20,671.83, 28,528.07 and 11,719.17 is: 16,172.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.83 : 28,528.07 = 11,719.17 : x
  2. Step 2: Convert to fraction form
    20,671.83/28,528.07 = 11,719.17/x
  3. Step 3: Cross multiply
    20,671.83x = 28,528.07 × 11,719.17
  4. Step 4: Simplify right side
    20,671.83x = 334,325,243.51
  5. Step 5: Solve for x
    x = 334,325,243.51/20,671.83
  6. Step 6: Final answer
    x = 16,172.99

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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.