Home / 11,721.65-17,570.32-7,329.02

Finding the Fourth Proportional to 11,721.65, 17,570.32 and 7,329.02

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Solution

The fourth proportional to 11,721.65, 17,570.32 and 7,329.02 is: 10,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.65 : 17,570.32 = 7,329.02 : x
  2. Step 2: Convert to fraction form
    11,721.65/17,570.32 = 7,329.02/x
  3. Step 3: Cross multiply
    11,721.65x = 17,570.32 × 7,329.02
  4. Step 4: Simplify right side
    11,721.65x = 128,773,120.51
  5. Step 5: Solve for x
    x = 128,773,120.51/11,721.65
  6. Step 6: Final answer
    x = 10,985.93

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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.