Home / 13,218.61-18,242.64-7,553.23

Finding the Fourth Proportional to 13,218.61, 18,242.64 and 7,553.23

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Solution

The fourth proportional to 13,218.61, 18,242.64 and 7,553.23 is: 10,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.61 : 18,242.64 = 7,553.23 : x
  2. Step 2: Convert to fraction form
    13,218.61/18,242.64 = 7,553.23/x
  3. Step 3: Cross multiply
    13,218.61x = 18,242.64 × 7,553.23
  4. Step 4: Simplify right side
    13,218.61x = 137,790,764.51
  5. Step 5: Solve for x
    x = 137,790,764.51/13,218.61
  6. Step 6: Final answer
    x = 10,424.00

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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.