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Finding the Fourth Proportional to 10,859.94, 16,289.88 and 4,285.94

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Solution

The fourth proportional to 10,859.94, 16,289.88 and 4,285.94 is: 6,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.94 : 16,289.88 = 4,285.94 : x
  2. Step 2: Convert to fraction form
    10,859.94/16,289.88 = 4,285.94/x
  3. Step 3: Cross multiply
    10,859.94x = 16,289.88 × 4,285.94
  4. Step 4: Simplify right side
    10,859.94x = 69,817,366.84
  5. Step 5: Solve for x
    x = 69,817,366.84/10,859.94
  6. Step 6: Final answer
    x = 6,428.89

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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.