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Finding the Fourth Proportional to 19,152.50, 26,430.50 and 11,199.11

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Solution

The fourth proportional to 19,152.50, 26,430.50 and 11,199.11 is: 15,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152.50 : 26,430.50 = 11,199.11 : x
  2. Step 2: Convert to fraction form
    19,152.50/26,430.50 = 11,199.11/x
  3. Step 3: Cross multiply
    19,152.50x = 26,430.50 × 11,199.11
  4. Step 4: Simplify right side
    19,152.50x = 295,998,076.86
  5. Step 5: Solve for x
    x = 295,998,076.86/19,152.50
  6. Step 6: Final answer
    x = 15,454.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.