Home / 13,214.40-18,236.71-8,730.29

Finding the Fourth Proportional to 13,214.40, 18,236.71 and 8,730.29

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Solution

The fourth proportional to 13,214.40, 18,236.71 and 8,730.29 is: 12,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.40 : 18,236.71 = 8,730.29 : x
  2. Step 2: Convert to fraction form
    13,214.40/18,236.71 = 8,730.29/x
  3. Step 3: Cross multiply
    13,214.40x = 18,236.71 × 8,730.29
  4. Step 4: Simplify right side
    13,214.40x = 159,211,823.45
  5. Step 5: Solve for x
    x = 159,211,823.45/13,214.40
  6. Step 6: Final answer
    x = 12,048.36

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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.