Home / 21,802.65-30,087.72-12,371.19

Finding the Fourth Proportional to 21,802.65, 30,087.72 and 12,371.19

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Solution

The fourth proportional to 21,802.65, 30,087.72 and 12,371.19 is: 17,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.65 : 30,087.72 = 12,371.19 : x
  2. Step 2: Convert to fraction form
    21,802.65/30,087.72 = 12,371.19/x
  3. Step 3: Cross multiply
    21,802.65x = 30,087.72 × 12,371.19
  4. Step 4: Simplify right side
    21,802.65x = 372,220,900.79
  5. Step 5: Solve for x
    x = 372,220,900.79/21,802.65
  6. Step 6: Final answer
    x = 17,072.28

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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.