Home / 13,508.30-18,637.88-8,664.71

Finding the Fourth Proportional to 13,508.30, 18,637.88 and 8,664.71

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Solution

The fourth proportional to 13,508.30, 18,637.88 and 8,664.71 is: 11,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.30 : 18,637.88 = 8,664.71 : x
  2. Step 2: Convert to fraction form
    13,508.30/18,637.88 = 8,664.71/x
  3. Step 3: Cross multiply
    13,508.30x = 18,637.88 × 8,664.71
  4. Step 4: Simplify right side
    13,508.30x = 161,491,688.70
  5. Step 5: Solve for x
    x = 161,491,688.70/13,508.30
  6. Step 6: Final answer
    x = 11,955.00

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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.