Home / 15,376.68-21,220.26-8,662.38

Finding the Fourth Proportional to 15,376.68, 21,220.26 and 8,662.38

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Solution

The fourth proportional to 15,376.68, 21,220.26 and 8,662.38 is: 11,954.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.68 : 21,220.26 = 8,662.38 : x
  2. Step 2: Convert to fraction form
    15,376.68/21,220.26 = 8,662.38/x
  3. Step 3: Cross multiply
    15,376.68x = 21,220.26 × 8,662.38
  4. Step 4: Simplify right side
    15,376.68x = 183,817,955.82
  5. Step 5: Solve for x
    x = 183,817,955.82/15,376.68
  6. Step 6: Final answer
    x = 11,954.33

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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.