Home / 19,920.42-27,490.98-10,968.77

Finding the Fourth Proportional to 19,920.42, 27,490.98 and 10,968.77

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Solution

The fourth proportional to 19,920.42, 27,490.98 and 10,968.77 is: 15,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.42 : 27,490.98 = 10,968.77 : x
  2. Step 2: Convert to fraction form
    19,920.42/27,490.98 = 10,968.77/x
  3. Step 3: Cross multiply
    19,920.42x = 27,490.98 × 10,968.77
  4. Step 4: Simplify right side
    19,920.42x = 301,542,099.24
  5. Step 5: Solve for x
    x = 301,542,099.24/19,920.42
  6. Step 6: Final answer
    x = 15,137.34

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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.