Home / 10,920.80-16,371.60-9,754.40

Finding the Fourth Proportional to 10,920.80, 16,371.60 and 9,754.40

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Solution

The fourth proportional to 10,920.80, 16,371.60 and 9,754.40 is: 14,623.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.80 : 16,371.60 = 9,754.40 : x
  2. Step 2: Convert to fraction form
    10,920.80/16,371.60 = 9,754.40/x
  3. Step 3: Cross multiply
    10,920.80x = 16,371.60 × 9,754.40
  4. Step 4: Simplify right side
    10,920.80x = 159,695,135.04
  5. Step 5: Solve for x
    x = 159,695,135.04/10,920.80
  6. Step 6: Final answer
    x = 14,623.03

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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.