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Finding the Fourth Proportional to 11,265.80, 16,898.70 and 8,641.40

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Solution

The fourth proportional to 11,265.80, 16,898.70 and 8,641.40 is: 12,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,265.80 : 16,898.70 = 8,641.40 : x
  2. Step 2: Convert to fraction form
    11,265.80/16,898.70 = 8,641.40/x
  3. Step 3: Cross multiply
    11,265.80x = 16,898.70 × 8,641.40
  4. Step 4: Simplify right side
    11,265.80x = 146,028,426.18
  5. Step 5: Solve for x
    x = 146,028,426.18/11,265.80
  6. Step 6: Final answer
    x = 12,962.10

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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.