Home / 13,214.08-18,234.88-7,905.76

Finding the Fourth Proportional to 13,214.08, 18,234.88 and 7,905.76

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Solution

The fourth proportional to 13,214.08, 18,234.88 and 7,905.76 is: 10,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.08 : 18,234.88 = 7,905.76 : x
  2. Step 2: Convert to fraction form
    13,214.08/18,234.88 = 7,905.76/x
  3. Step 3: Cross multiply
    13,214.08x = 18,234.88 × 7,905.76
  4. Step 4: Simplify right side
    13,214.08x = 144,160,584.91
  5. Step 5: Solve for x
    x = 144,160,584.91/13,214.08
  6. Step 6: Final answer
    x = 10,909.62

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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.