Home / 20,850.84-28,768.14-12,465.72

Finding the Fourth Proportional to 20,850.84, 28,768.14 and 12,465.72

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Solution

The fourth proportional to 20,850.84, 28,768.14 and 12,465.72 is: 17,199.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.84 : 28,768.14 = 12,465.72 : x
  2. Step 2: Convert to fraction form
    20,850.84/28,768.14 = 12,465.72/x
  3. Step 3: Cross multiply
    20,850.84x = 28,768.14 × 12,465.72
  4. Step 4: Simplify right side
    20,850.84x = 358,615,578.16
  5. Step 5: Solve for x
    x = 358,615,578.16/20,850.84
  6. Step 6: Final answer
    x = 17,199.10

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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.