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Finding the Fourth Proportional to 13,253.79, 19,845.18 and 7,000.86

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Solution

The fourth proportional to 13,253.79, 19,845.18 and 7,000.86 is: 10,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.79 : 19,845.18 = 7,000.86 : x
  2. Step 2: Convert to fraction form
    13,253.79/19,845.18 = 7,000.86/x
  3. Step 3: Cross multiply
    13,253.79x = 19,845.18 × 7,000.86
  4. Step 4: Simplify right side
    13,253.79x = 138,933,326.85
  5. Step 5: Solve for x
    x = 138,933,326.85/13,253.79
  6. Step 6: Final answer
    x = 10,482.54

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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.