Home / 10,186.20-15,283.69-5,509.50

Finding the Fourth Proportional to 10,186.20, 15,283.69 and 5,509.50

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Solution

The fourth proportional to 10,186.20, 15,283.69 and 5,509.50 is: 8,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.20 : 15,283.69 = 5,509.50 : x
  2. Step 2: Convert to fraction form
    10,186.20/15,283.69 = 5,509.50/x
  3. Step 3: Cross multiply
    10,186.20x = 15,283.69 × 5,509.50
  4. Step 4: Simplify right side
    10,186.20x = 84,205,476.28
  5. Step 5: Solve for x
    x = 84,205,476.28/10,186.20
  6. Step 6: Final answer
    x = 8,266.63

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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.