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Finding the Fourth Proportional to 10,693.80, 16,059.90 and 7,775.40

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Solution

The fourth proportional to 10,693.80, 16,059.90 and 7,775.40 is: 11,677.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,693.80 : 16,059.90 = 7,775.40 : x
  2. Step 2: Convert to fraction form
    10,693.80/16,059.90 = 7,775.40/x
  3. Step 3: Cross multiply
    10,693.80x = 16,059.90 × 7,775.40
  4. Step 4: Simplify right side
    10,693.80x = 124,872,146.46
  5. Step 5: Solve for x
    x = 124,872,146.46/10,693.80
  6. Step 6: Final answer
    x = 11,677.06

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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.