Home / 18,965.30-28,439.14-11,070.09

Finding the Fourth Proportional to 18,965.30, 28,439.14 and 11,070.09

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Solution

The fourth proportional to 18,965.30, 28,439.14 and 11,070.09 is: 16,599.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.30 : 28,439.14 = 11,070.09 : x
  2. Step 2: Convert to fraction form
    18,965.30/28,439.14 = 11,070.09/x
  3. Step 3: Cross multiply
    18,965.30x = 28,439.14 × 11,070.09
  4. Step 4: Simplify right side
    18,965.30x = 314,823,783.97
  5. Step 5: Solve for x
    x = 314,823,783.97/18,965.30
  6. Step 6: Final answer
    x = 16,599.99

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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.