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Finding the Fourth Proportional to 34,284.80, 51,430.80 and 10,905.80

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Solution

The fourth proportional to 34,284.80, 51,430.80 and 10,905.80 is: 16,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,284.80 : 51,430.80 = 10,905.80 : x
  2. Step 2: Convert to fraction form
    34,284.80/51,430.80 = 10,905.80/x
  3. Step 3: Cross multiply
    34,284.80x = 51,430.80 × 10,905.80
  4. Step 4: Simplify right side
    34,284.80x = 560,894,018.64
  5. Step 5: Solve for x
    x = 560,894,018.64/34,284.80
  6. Step 6: Final answer
    x = 16,359.85

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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.