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Finding the Fourth Proportional to 11,059.80, 15,281.95 and 8,840.00

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Solution

The fourth proportional to 11,059.80, 15,281.95 and 8,840.00 is: 12,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,059.80 : 15,281.95 = 8,840.00 : x
  2. Step 2: Convert to fraction form
    11,059.80/15,281.95 = 8,840.00/x
  3. Step 3: Cross multiply
    11,059.80x = 15,281.95 × 8,840.00
  4. Step 4: Simplify right side
    11,059.80x = 135,092,339.49
  5. Step 5: Solve for x
    x = 135,092,339.49/11,059.80
  6. Step 6: Final answer
    x = 12,214.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.