Home / 15,025.94-20,728.82-9,722.47

Finding the Fourth Proportional to 15,025.94, 20,728.82 and 9,722.47

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Solution

The fourth proportional to 15,025.94, 20,728.82 and 9,722.47 is: 13,412.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.94 : 20,728.82 = 9,722.47 : x
  2. Step 2: Convert to fraction form
    15,025.94/20,728.82 = 9,722.47/x
  3. Step 3: Cross multiply
    15,025.94x = 20,728.82 × 9,722.47
  4. Step 4: Simplify right side
    15,025.94x = 201,535,281.97
  5. Step 5: Solve for x
    x = 201,535,281.97/15,025.94
  6. Step 6: Final answer
    x = 13,412.49

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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.