Home / 13,310.86-18,370.18-9,283.53

Finding the Fourth Proportional to 13,310.86, 18,370.18 and 9,283.53

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Solution

The fourth proportional to 13,310.86, 18,370.18 and 9,283.53 is: 12,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.86 : 18,370.18 = 9,283.53 : x
  2. Step 2: Convert to fraction form
    13,310.86/18,370.18 = 9,283.53/x
  3. Step 3: Cross multiply
    13,310.86x = 18,370.18 × 9,283.53
  4. Step 4: Simplify right side
    13,310.86x = 170,540,059.85
  5. Step 5: Solve for x
    x = 170,540,059.85/13,310.86
  6. Step 6: Final answer
    x = 12,812.10

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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.