Home / 31,259.16-43,136-17,109.28

Finding the Fourth Proportional to 31,259.16, 43,136 and 17,109.28

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Solution

The fourth proportional to 31,259.16, 43,136 and 17,109.28 is: 23,609.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,259.16 : 43,136 = 17,109.28 : x
  2. Step 2: Convert to fraction form
    31,259.16/43,136 = 17,109.28/x
  3. Step 3: Cross multiply
    31,259.16x = 43,136 × 17,109.28
  4. Step 4: Simplify right side
    31,259.16x = 738,025,902.08
  5. Step 5: Solve for x
    x = 738,025,902.08/31,259.16
  6. Step 6: Final answer
    x = 23,609.91

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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.