Home / 13,382.61-19,992.51-8,664.18

Finding the Fourth Proportional to 13,382.61, 19,992.51 and 8,664.18

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Solution

The fourth proportional to 13,382.61, 19,992.51 and 8,664.18 is: 12,943.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.61 : 19,992.51 = 8,664.18 : x
  2. Step 2: Convert to fraction form
    13,382.61/19,992.51 = 8,664.18/x
  3. Step 3: Cross multiply
    13,382.61x = 19,992.51 × 8,664.18
  4. Step 4: Simplify right side
    13,382.61x = 173,218,705.29
  5. Step 5: Solve for x
    x = 173,218,705.29/13,382.61
  6. Step 6: Final answer
    x = 12,943.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.