Home / 14,943.75-20,615.45-9,640.28

Finding the Fourth Proportional to 14,943.75, 20,615.45 and 9,640.28

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Solution

The fourth proportional to 14,943.75, 20,615.45 and 9,640.28 is: 13,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,943.75 : 20,615.45 = 9,640.28 : x
  2. Step 2: Convert to fraction form
    14,943.75/20,615.45 = 9,640.28/x
  3. Step 3: Cross multiply
    14,943.75x = 20,615.45 × 9,640.28
  4. Step 4: Simplify right side
    14,943.75x = 198,738,710.33
  5. Step 5: Solve for x
    x = 198,738,710.33/14,943.75
  6. Step 6: Final answer
    x = 13,299.12

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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.