Home / 13,385.61-18,473.40-8,084.79

Finding the Fourth Proportional to 13,385.61, 18,473.40 and 8,084.79

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Solution

The fourth proportional to 13,385.61, 18,473.40 and 8,084.79 is: 11,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.61 : 18,473.40 = 8,084.79 : x
  2. Step 2: Convert to fraction form
    13,385.61/18,473.40 = 8,084.79/x
  3. Step 3: Cross multiply
    13,385.61x = 18,473.40 × 8,084.79
  4. Step 4: Simplify right side
    13,385.61x = 149,353,559.59
  5. Step 5: Solve for x
    x = 149,353,559.59/13,385.61
  6. Step 6: Final answer
    x = 11,157.77

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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.