Home / 13,228.71-18,256.44-8,744.69

Finding the Fourth Proportional to 13,228.71, 18,256.44 and 8,744.69

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Solution

The fourth proportional to 13,228.71, 18,256.44 and 8,744.69 is: 12,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.71 : 18,256.44 = 8,744.69 : x
  2. Step 2: Convert to fraction form
    13,228.71/18,256.44 = 8,744.69/x
  3. Step 3: Cross multiply
    13,228.71x = 18,256.44 × 8,744.69
  4. Step 4: Simplify right side
    13,228.71x = 159,646,817.02
  5. Step 5: Solve for x
    x = 159,646,817.02/13,228.71
  6. Step 6: Final answer
    x = 12,068.21

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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.