Home / 11,902.45-16,433.40-10,639.47

Finding the Fourth Proportional to 11,902.45, 16,433.40 and 10,639.47

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Solution

The fourth proportional to 11,902.45, 16,433.40 and 10,639.47 is: 14,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,902.45 : 16,433.40 = 10,639.47 : x
  2. Step 2: Convert to fraction form
    11,902.45/16,433.40 = 10,639.47/x
  3. Step 3: Cross multiply
    11,902.45x = 16,433.40 × 10,639.47
  4. Step 4: Simplify right side
    11,902.45x = 174,842,666.30
  5. Step 5: Solve for x
    x = 174,842,666.30/11,902.45
  6. Step 6: Final answer
    x = 14,689.64

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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.