Home / 10,639.33-14,674.80-9,220.51

Finding the Fourth Proportional to 10,639.33, 14,674.80 and 9,220.51

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Solution

The fourth proportional to 10,639.33, 14,674.80 and 9,220.51 is: 12,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.33 : 14,674.80 = 9,220.51 : x
  2. Step 2: Convert to fraction form
    10,639.33/14,674.80 = 9,220.51/x
  3. Step 3: Cross multiply
    10,639.33x = 14,674.80 × 9,220.51
  4. Step 4: Simplify right side
    10,639.33x = 135,309,193.07
  5. Step 5: Solve for x
    x = 135,309,193.07/10,639.33
  6. Step 6: Final answer
    x = 12,717.83

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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.