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Finding the Fourth Proportional to 19,281.08, 28,914.32 and 10,511.22

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Solution

The fourth proportional to 19,281.08, 28,914.32 and 10,511.22 is: 15,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.08 : 28,914.32 = 10,511.22 : x
  2. Step 2: Convert to fraction form
    19,281.08/28,914.32 = 10,511.22/x
  3. Step 3: Cross multiply
    19,281.08x = 28,914.32 × 10,511.22
  4. Step 4: Simplify right side
    19,281.08x = 303,924,778.67
  5. Step 5: Solve for x
    x = 303,924,778.67/19,281.08
  6. Step 6: Final answer
    x = 15,762.85

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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.