Home / 13,310.40-18,376.91-8,281.47

Finding the Fourth Proportional to 13,310.40, 18,376.91 and 8,281.47

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Solution

The fourth proportional to 13,310.40, 18,376.91 and 8,281.47 is: 11,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.40 : 18,376.91 = 8,281.47 : x
  2. Step 2: Convert to fraction form
    13,310.40/18,376.91 = 8,281.47/x
  3. Step 3: Cross multiply
    13,310.40x = 18,376.91 × 8,281.47
  4. Step 4: Simplify right side
    13,310.40x = 152,187,828.86
  5. Step 5: Solve for x
    x = 152,187,828.86/13,310.40
  6. Step 6: Final answer
    x = 11,433.75

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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.