Home / 26,639.69-39,949.09-9,990.64

Finding the Fourth Proportional to 26,639.69, 39,949.09 and 9,990.64

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Solution

The fourth proportional to 26,639.69, 39,949.09 and 9,990.64 is: 14,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,639.69 : 39,949.09 = 9,990.64 : x
  2. Step 2: Convert to fraction form
    26,639.69/39,949.09 = 9,990.64/x
  3. Step 3: Cross multiply
    26,639.69x = 39,949.09 × 9,990.64
  4. Step 4: Simplify right side
    26,639.69x = 399,116,851.67
  5. Step 5: Solve for x
    x = 399,116,851.67/26,639.69
  6. Step 6: Final answer
    x = 14,982.04

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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.