Home / 14,289.41-21,438.52-6,398.55

Finding the Fourth Proportional to 14,289.41, 21,438.52 and 6,398.55

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Solution

The fourth proportional to 14,289.41, 21,438.52 and 6,398.55 is: 9,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.41 : 21,438.52 = 6,398.55 : x
  2. Step 2: Convert to fraction form
    14,289.41/21,438.52 = 6,398.55/x
  3. Step 3: Cross multiply
    14,289.41x = 21,438.52 × 6,398.55
  4. Step 4: Simplify right side
    14,289.41x = 137,175,426.15
  5. Step 5: Solve for x
    x = 137,175,426.15/14,289.41
  6. Step 6: Final answer
    x = 9,599.79

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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.