Home / 13,962.09-19,262.23-7,990.57

Finding the Fourth Proportional to 13,962.09, 19,262.23 and 7,990.57

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Solution

The fourth proportional to 13,962.09, 19,262.23 and 7,990.57 is: 11,023.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,962.09 : 19,262.23 = 7,990.57 : x
  2. Step 2: Convert to fraction form
    13,962.09/19,262.23 = 7,990.57/x
  3. Step 3: Cross multiply
    13,962.09x = 19,262.23 × 7,990.57
  4. Step 4: Simplify right side
    13,962.09x = 153,916,197.17
  5. Step 5: Solve for x
    x = 153,916,197.17/13,962.09
  6. Step 6: Final answer
    x = 11,023.87

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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.