Home / 20,925.14-28,876.70-11,364.84

Finding the Fourth Proportional to 20,925.14, 28,876.70 and 11,364.84

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Solution

The fourth proportional to 20,925.14, 28,876.70 and 11,364.84 is: 15,683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.14 : 28,876.70 = 11,364.84 : x
  2. Step 2: Convert to fraction form
    20,925.14/28,876.70 = 11,364.84/x
  3. Step 3: Cross multiply
    20,925.14x = 28,876.70 × 11,364.84
  4. Step 4: Simplify right side
    20,925.14x = 328,179,103.64
  5. Step 5: Solve for x
    x = 328,179,103.64/20,925.14
  6. Step 6: Final answer
    x = 15,683.49

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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.