Home / 25,297.60-34,935.96-20,865.28

Finding the Fourth Proportional to 25,297.60, 34,935.96 and 20,865.28

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Solution

The fourth proportional to 25,297.60, 34,935.96 and 20,865.28 is: 28,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,297.60 : 34,935.96 = 20,865.28 : x
  2. Step 2: Convert to fraction form
    25,297.60/34,935.96 = 20,865.28/x
  3. Step 3: Cross multiply
    25,297.60x = 34,935.96 × 20,865.28
  4. Step 4: Simplify right side
    25,297.60x = 728,948,587.47
  5. Step 5: Solve for x
    x = 728,948,587.47/25,297.60
  6. Step 6: Final answer
    x = 28,814.93

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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.