Home / 21,589.34-32,374.28-8,438.18

Finding the Fourth Proportional to 21,589.34, 32,374.28 and 8,438.18

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Solution

The fourth proportional to 21,589.34, 32,374.28 and 8,438.18 is: 12,653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.34 : 32,374.28 = 8,438.18 : x
  2. Step 2: Convert to fraction form
    21,589.34/32,374.28 = 8,438.18/x
  3. Step 3: Cross multiply
    21,589.34x = 32,374.28 × 8,438.18
  4. Step 4: Simplify right side
    21,589.34x = 273,179,861.23
  5. Step 5: Solve for x
    x = 273,179,861.23/21,589.34
  6. Step 6: Final answer
    x = 12,653.46

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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.