Home / 28,008.60-38,651.70-15,433.32

Finding the Fourth Proportional to 28,008.60, 38,651.70 and 15,433.32

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Solution

The fourth proportional to 28,008.60, 38,651.70 and 15,433.32 is: 21,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.60 : 38,651.70 = 15,433.32 : x
  2. Step 2: Convert to fraction form
    28,008.60/38,651.70 = 15,433.32/x
  3. Step 3: Cross multiply
    28,008.60x = 38,651.70 × 15,433.32
  4. Step 4: Simplify right side
    28,008.60x = 596,524,054.64
  5. Step 5: Solve for x
    x = 596,524,054.64/28,008.60
  6. Step 6: Final answer
    x = 21,297.89

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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.