Home / 13,485.65-18,610.21-7,517.18

Finding the Fourth Proportional to 13,485.65, 18,610.21 and 7,517.18

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Solution

The fourth proportional to 13,485.65, 18,610.21 and 7,517.18 is: 10,373.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.65 : 18,610.21 = 7,517.18 : x
  2. Step 2: Convert to fraction form
    13,485.65/18,610.21 = 7,517.18/x
  3. Step 3: Cross multiply
    13,485.65x = 18,610.21 × 7,517.18
  4. Step 4: Simplify right side
    13,485.65x = 139,896,260.82
  5. Step 5: Solve for x
    x = 139,896,260.82/13,485.65
  6. Step 6: Final answer
    x = 10,373.71

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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.