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Finding the Fourth Proportional to 19,697.54, 29,528.53 and 7,208.86

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Solution

The fourth proportional to 19,697.54, 29,528.53 and 7,208.86 is: 10,806.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,697.54 : 29,528.53 = 7,208.86 : x
  2. Step 2: Convert to fraction form
    19,697.54/29,528.53 = 7,208.86/x
  3. Step 3: Cross multiply
    19,697.54x = 29,528.53 × 7,208.86
  4. Step 4: Simplify right side
    19,697.54x = 212,867,038.78
  5. Step 5: Solve for x
    x = 212,867,038.78/19,697.54
  6. Step 6: Final answer
    x = 10,806.78

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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.