Home / 18,666.51-25,757.71-11,111.82

Finding the Fourth Proportional to 18,666.51, 25,757.71 and 11,111.82

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Solution

The fourth proportional to 18,666.51, 25,757.71 and 11,111.82 is: 15,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.51 : 25,757.71 = 11,111.82 : x
  2. Step 2: Convert to fraction form
    18,666.51/25,757.71 = 11,111.82/x
  3. Step 3: Cross multiply
    18,666.51x = 25,757.71 × 11,111.82
  4. Step 4: Simplify right side
    18,666.51x = 286,215,037.13
  5. Step 5: Solve for x
    x = 286,215,037.13/18,666.51
  6. Step 6: Final answer
    x = 15,333.08

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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.