Home / 15,174.84-20,940.21-8,460.18

Finding the Fourth Proportional to 15,174.84, 20,940.21 and 8,460.18

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Solution

The fourth proportional to 15,174.84, 20,940.21 and 8,460.18 is: 11,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.84 : 20,940.21 = 8,460.18 : x
  2. Step 2: Convert to fraction form
    15,174.84/20,940.21 = 8,460.18/x
  3. Step 3: Cross multiply
    15,174.84x = 20,940.21 × 8,460.18
  4. Step 4: Simplify right side
    15,174.84x = 177,157,945.84
  5. Step 5: Solve for x
    x = 177,157,945.84/15,174.84
  6. Step 6: Final answer
    x = 11,674.45

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Double scale
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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.