Home / 13,221.75-18,246.02-7,632.75

Finding the Fourth Proportional to 13,221.75, 18,246.02 and 7,632.75

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Solution

The fourth proportional to 13,221.75, 18,246.02 and 7,632.75 is: 10,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.75 : 18,246.02 = 7,632.75 : x
  2. Step 2: Convert to fraction form
    13,221.75/18,246.02 = 7,632.75/x
  3. Step 3: Cross multiply
    13,221.75x = 18,246.02 × 7,632.75
  4. Step 4: Simplify right side
    13,221.75x = 139,267,309.16
  5. Step 5: Solve for x
    x = 139,267,309.16/13,221.75
  6. Step 6: Final answer
    x = 10,533.20

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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.