Home / 10,812.80-16,218.62-7,637.19

Finding the Fourth Proportional to 10,812.80, 16,218.62 and 7,637.19

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Solution

The fourth proportional to 10,812.80, 16,218.62 and 7,637.19 is: 11,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.80 : 16,218.62 = 7,637.19 : x
  2. Step 2: Convert to fraction form
    10,812.80/16,218.62 = 7,637.19/x
  3. Step 3: Cross multiply
    10,812.80x = 16,218.62 × 7,637.19
  4. Step 4: Simplify right side
    10,812.80x = 123,864,644.29
  5. Step 5: Solve for x
    x = 123,864,644.29/10,812.80
  6. Step 6: Final answer
    x = 11,455.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.