Home / 15,219.14-21,015.78-9,563.69

Finding the Fourth Proportional to 15,219.14, 21,015.78 and 9,563.69

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Solution

The fourth proportional to 15,219.14, 21,015.78 and 9,563.69 is: 13,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.14 : 21,015.78 = 9,563.69 : x
  2. Step 2: Convert to fraction form
    15,219.14/21,015.78 = 9,563.69/x
  3. Step 3: Cross multiply
    15,219.14x = 21,015.78 × 9,563.69
  4. Step 4: Simplify right side
    15,219.14x = 200,988,457.57
  5. Step 5: Solve for x
    x = 200,988,457.57/15,219.14
  6. Step 6: Final answer
    x = 13,206.29

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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.