Home / 28,635.64-42,958.62-8,909.56

Finding the Fourth Proportional to 28,635.64, 42,958.62 and 8,909.56

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Solution

The fourth proportional to 28,635.64, 42,958.62 and 8,909.56 is: 13,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.64 : 42,958.62 = 8,909.56 : x
  2. Step 2: Convert to fraction form
    28,635.64/42,958.62 = 8,909.56/x
  3. Step 3: Cross multiply
    28,635.64x = 42,958.62 × 8,909.56
  4. Step 4: Simplify right side
    28,635.64x = 382,742,402.41
  5. Step 5: Solve for x
    x = 382,742,402.41/28,635.64
  6. Step 6: Final answer
    x = 13,365.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.