Home / 13,688.09-18,901.07-9,226.61

Finding the Fourth Proportional to 13,688.09, 18,901.07 and 9,226.61

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Solution

The fourth proportional to 13,688.09, 18,901.07 and 9,226.61 is: 12,740.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.09 : 18,901.07 = 9,226.61 : x
  2. Step 2: Convert to fraction form
    13,688.09/18,901.07 = 9,226.61/x
  3. Step 3: Cross multiply
    13,688.09x = 18,901.07 × 9,226.61
  4. Step 4: Simplify right side
    13,688.09x = 174,392,695.43
  5. Step 5: Solve for x
    x = 174,392,695.43/13,688.09
  6. Step 6: Final answer
    x = 12,740.47

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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.