Home / 30,711.81-46,057.89-11,987.31

Finding the Fourth Proportional to 30,711.81, 46,057.89 and 11,987.31

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Solution

The fourth proportional to 30,711.81, 46,057.89 and 11,987.31 is: 17,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.81 : 46,057.89 = 11,987.31 : x
  2. Step 2: Convert to fraction form
    30,711.81/46,057.89 = 11,987.31/x
  3. Step 3: Cross multiply
    30,711.81x = 46,057.89 × 11,987.31
  4. Step 4: Simplify right side
    30,711.81x = 552,110,205.38
  5. Step 5: Solve for x
    x = 552,110,205.38/30,711.81
  6. Step 6: Final answer
    x = 17,977.13

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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.