Home / 16,639.41-22,954.09-9,920.30

Finding the Fourth Proportional to 16,639.41, 22,954.09 and 9,920.30

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Solution

The fourth proportional to 16,639.41, 22,954.09 and 9,920.30 is: 13,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.41 : 22,954.09 = 9,920.30 : x
  2. Step 2: Convert to fraction form
    16,639.41/22,954.09 = 9,920.30/x
  3. Step 3: Cross multiply
    16,639.41x = 22,954.09 × 9,920.30
  4. Step 4: Simplify right side
    16,639.41x = 227,711,459.03
  5. Step 5: Solve for x
    x = 227,711,459.03/16,639.41
  6. Step 6: Final answer
    x = 13,685.07

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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.