Home / 20,925.74-28,877.60-11,365.64

Finding the Fourth Proportional to 20,925.74, 28,877.60 and 11,365.64

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Solution

The fourth proportional to 20,925.74, 28,877.60 and 11,365.64 is: 15,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.74 : 28,877.60 = 11,365.64 : x
  2. Step 2: Convert to fraction form
    20,925.74/28,877.60 = 11,365.64/x
  3. Step 3: Cross multiply
    20,925.74x = 28,877.60 × 11,365.64
  4. Step 4: Simplify right side
    20,925.74x = 328,212,405.66
  5. Step 5: Solve for x
    x = 328,212,405.66/20,925.74
  6. Step 6: Final answer
    x = 15,684.63

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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.