Home / 13,220.04-18,243.18-7,629.96

Finding the Fourth Proportional to 13,220.04, 18,243.18 and 7,629.96

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Solution

The fourth proportional to 13,220.04, 18,243.18 and 7,629.96 is: 10,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.04 : 18,243.18 = 7,629.96 : x
  2. Step 2: Convert to fraction form
    13,220.04/18,243.18 = 7,629.96/x
  3. Step 3: Cross multiply
    13,220.04x = 18,243.18 × 7,629.96
  4. Step 4: Simplify right side
    13,220.04x = 139,194,733.67
  5. Step 5: Solve for x
    x = 139,194,733.67/13,220.04
  6. Step 6: Final answer
    x = 10,529.07

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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.