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Finding the Fourth Proportional to 19,156.80, 28,673.80 and 10,249.89

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Solution

The fourth proportional to 19,156.80, 28,673.80 and 10,249.89 is: 15,341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.80 : 28,673.80 = 10,249.89 : x
  2. Step 2: Convert to fraction form
    19,156.80/28,673.80 = 10,249.89/x
  3. Step 3: Cross multiply
    19,156.80x = 28,673.80 × 10,249.89
  4. Step 4: Simplify right side
    19,156.80x = 293,903,324.02
  5. Step 5: Solve for x
    x = 293,903,324.02/19,156.80
  6. Step 6: Final answer
    x = 15,341.98

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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.