Home / 13,211.91-18,228.65-8,734.03

Finding the Fourth Proportional to 13,211.91, 18,228.65 and 8,734.03

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Solution

The fourth proportional to 13,211.91, 18,228.65 and 8,734.03 is: 12,050.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.91 : 18,228.65 = 8,734.03 : x
  2. Step 2: Convert to fraction form
    13,211.91/18,228.65 = 8,734.03/x
  3. Step 3: Cross multiply
    13,211.91x = 18,228.65 × 8,734.03
  4. Step 4: Simplify right side
    13,211.91x = 159,209,486.72
  5. Step 5: Solve for x
    x = 159,209,486.72/13,211.91
  6. Step 6: Final answer
    x = 12,050.45

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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.