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Finding the Fourth Proportional to 19,229.70, 28,844.55 and 11,810.10

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Solution

The fourth proportional to 19,229.70, 28,844.55 and 11,810.10 is: 17,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,229.70 : 28,844.55 = 11,810.10 : x
  2. Step 2: Convert to fraction form
    19,229.70/28,844.55 = 11,810.10/x
  3. Step 3: Cross multiply
    19,229.70x = 28,844.55 × 11,810.10
  4. Step 4: Simplify right side
    19,229.70x = 340,657,019.96
  5. Step 5: Solve for x
    x = 340,657,019.96/19,229.70
  6. Step 6: Final answer
    x = 17,715.15

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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.