Home / 10,819.80-16,235.10-6,143.40

Finding the Fourth Proportional to 10,819.80, 16,235.10 and 6,143.40

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Solution

The fourth proportional to 10,819.80, 16,235.10 and 6,143.40 is: 9,218.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,819.80 : 16,235.10 = 6,143.40 : x
  2. Step 2: Convert to fraction form
    10,819.80/16,235.10 = 6,143.40/x
  3. Step 3: Cross multiply
    10,819.80x = 16,235.10 × 6,143.40
  4. Step 4: Simplify right side
    10,819.80x = 99,738,713.34
  5. Step 5: Solve for x
    x = 99,738,713.34/10,819.80
  6. Step 6: Final answer
    x = 9,218.17

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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.