Home / 19,011.84-28,517.68-5,160.80

Finding the Fourth Proportional to 19,011.84, 28,517.68 and 5,160.80

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Solution

The fourth proportional to 19,011.84, 28,517.68 and 5,160.80 is: 7,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.84 : 28,517.68 = 5,160.80 : x
  2. Step 2: Convert to fraction form
    19,011.84/28,517.68 = 5,160.80/x
  3. Step 3: Cross multiply
    19,011.84x = 28,517.68 × 5,160.80
  4. Step 4: Simplify right side
    19,011.84x = 147,174,042.94
  5. Step 5: Solve for x
    x = 147,174,042.94/19,011.84
  6. Step 6: Final answer
    x = 7,741.18

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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.