Home / 20,925.51-28,878.98-11,496.03

Finding the Fourth Proportional to 20,925.51, 28,878.98 and 11,496.03

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Solution

The fourth proportional to 20,925.51, 28,878.98 and 11,496.03 is: 15,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.51 : 28,878.98 = 11,496.03 : x
  2. Step 2: Convert to fraction form
    20,925.51/28,878.98 = 11,496.03/x
  3. Step 3: Cross multiply
    20,925.51x = 28,878.98 × 11,496.03
  4. Step 4: Simplify right side
    20,925.51x = 331,993,562.97
  5. Step 5: Solve for x
    x = 331,993,562.97/20,925.51
  6. Step 6: Final answer
    x = 15,865.49

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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.