Home / 13,485.24-18,608.97-7,515.81

Finding the Fourth Proportional to 13,485.24, 18,608.97 and 7,515.81

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Solution

The fourth proportional to 13,485.24, 18,608.97 and 7,515.81 is: 10,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.24 : 18,608.97 = 7,515.81 : x
  2. Step 2: Convert to fraction form
    13,485.24/18,608.97 = 7,515.81/x
  3. Step 3: Cross multiply
    13,485.24x = 18,608.97 × 7,515.81
  4. Step 4: Simplify right side
    13,485.24x = 139,861,482.82
  5. Step 5: Solve for x
    x = 139,861,482.82/13,485.24
  6. Step 6: Final answer
    x = 10,371.45

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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.