Home / 13,155.99-18,149.13-7,563.75

Finding the Fourth Proportional to 13,155.99, 18,149.13 and 7,563.75

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Solution

The fourth proportional to 13,155.99, 18,149.13 and 7,563.75 is: 10,434.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.99 : 18,149.13 = 7,563.75 : x
  2. Step 2: Convert to fraction form
    13,155.99/18,149.13 = 7,563.75/x
  3. Step 3: Cross multiply
    13,155.99x = 18,149.13 × 7,563.75
  4. Step 4: Simplify right side
    13,155.99x = 137,275,482.04
  5. Step 5: Solve for x
    x = 137,275,482.04/13,155.99
  6. Step 6: Final answer
    x = 10,434.45

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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.