Home / 28,818.25-39,769.80-16,243

Finding the Fourth Proportional to 28,818.25, 39,769.80 and 16,243

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Solution

The fourth proportional to 28,818.25, 39,769.80 and 16,243 is: 22,415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818.25 : 39,769.80 = 16,243 : x
  2. Step 2: Convert to fraction form
    28,818.25/39,769.80 = 16,243/x
  3. Step 3: Cross multiply
    28,818.25x = 39,769.80 × 16,243
  4. Step 4: Simplify right side
    28,818.25x = 645,980,861.40
  5. Step 5: Solve for x
    x = 645,980,861.40/28,818.25
  6. Step 6: Final answer
    x = 22,415.69

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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.