Home / 14,425.87-21,639.79-8,511.40

Finding the Fourth Proportional to 14,425.87, 21,639.79 and 8,511.40

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Solution

The fourth proportional to 14,425.87, 21,639.79 and 8,511.40 is: 12,767.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.87 : 21,639.79 = 8,511.40 : x
  2. Step 2: Convert to fraction form
    14,425.87/21,639.79 = 8,511.40/x
  3. Step 3: Cross multiply
    14,425.87x = 21,639.79 × 8,511.40
  4. Step 4: Simplify right side
    14,425.87x = 184,184,908.61
  5. Step 5: Solve for x
    x = 184,184,908.61/14,425.87
  6. Step 6: Final answer
    x = 12,767.68

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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.