Home / 10,990.40-16,455.36-7,085.12

Finding the Fourth Proportional to 10,990.40, 16,455.36 and 7,085.12

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Solution

The fourth proportional to 10,990.40, 16,455.36 and 7,085.12 is: 10,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.40 : 16,455.36 = 7,085.12 : x
  2. Step 2: Convert to fraction form
    10,990.40/16,455.36 = 7,085.12/x
  3. Step 3: Cross multiply
    10,990.40x = 16,455.36 × 7,085.12
  4. Step 4: Simplify right side
    10,990.40x = 116,588,200.24
  5. Step 5: Solve for x
    x = 116,588,200.24/10,990.40
  6. Step 6: Final answer
    x = 10,608.19

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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.