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Finding the Fourth Proportional to 19,091.42, 28,637.10 and 10,343.42

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Solution

The fourth proportional to 19,091.42, 28,637.10 and 10,343.42 is: 15,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.42 : 28,637.10 = 10,343.42 : x
  2. Step 2: Convert to fraction form
    19,091.42/28,637.10 = 10,343.42/x
  3. Step 3: Cross multiply
    19,091.42x = 28,637.10 × 10,343.42
  4. Step 4: Simplify right side
    19,091.42x = 296,205,552.88
  5. Step 5: Solve for x
    x = 296,205,552.88/19,091.42
  6. Step 6: Final answer
    x = 15,515.11

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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.