Home / 20,965.64-28,925.51-14,239.60

Finding the Fourth Proportional to 20,965.64, 28,925.51 and 14,239.60

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Solution

The fourth proportional to 20,965.64, 28,925.51 and 14,239.60 is: 19,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.64 : 28,925.51 = 14,239.60 : x
  2. Step 2: Convert to fraction form
    20,965.64/28,925.51 = 14,239.60/x
  3. Step 3: Cross multiply
    20,965.64x = 28,925.51 × 14,239.60
  4. Step 4: Simplify right side
    20,965.64x = 411,887,548.68
  5. Step 5: Solve for x
    x = 411,887,548.68/20,965.64
  6. Step 6: Final answer
    x = 19,645.84

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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.