Home / 13,186.59-19,780.49-7,338.79

Finding the Fourth Proportional to 13,186.59, 19,780.49 and 7,338.79

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Solution

The fourth proportional to 13,186.59, 19,780.49 and 7,338.79 is: 11,008.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.59 : 19,780.49 = 7,338.79 : x
  2. Step 2: Convert to fraction form
    13,186.59/19,780.49 = 7,338.79/x
  3. Step 3: Cross multiply
    13,186.59x = 19,780.49 × 7,338.79
  4. Step 4: Simplify right side
    13,186.59x = 145,164,825.51
  5. Step 5: Solve for x
    x = 145,164,825.51/13,186.59
  6. Step 6: Final answer
    x = 11,008.52

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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.