Home / 21,173.13-31,778.73-15,557.94

Finding the Fourth Proportional to 21,173.13, 31,778.73 and 15,557.94

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Solution

The fourth proportional to 21,173.13, 31,778.73 and 15,557.94 is: 23,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.13 : 31,778.73 = 15,557.94 : x
  2. Step 2: Convert to fraction form
    21,173.13/31,778.73 = 15,557.94/x
  3. Step 3: Cross multiply
    21,173.13x = 31,778.73 × 15,557.94
  4. Step 4: Simplify right side
    21,173.13x = 494,411,574.62
  5. Step 5: Solve for x
    x = 494,411,574.62/21,173.13
  6. Step 6: Final answer
    x = 23,350.90

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1.5x scale

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.