Home / 13,221.56-18,246.30-7,632.56

Finding the Fourth Proportional to 13,221.56, 18,246.30 and 7,632.56

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Solution

The fourth proportional to 13,221.56, 18,246.30 and 7,632.56 is: 10,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.56 : 18,246.30 = 7,632.56 : x
  2. Step 2: Convert to fraction form
    13,221.56/18,246.30 = 7,632.56/x
  3. Step 3: Cross multiply
    13,221.56x = 18,246.30 × 7,632.56
  4. Step 4: Simplify right side
    13,221.56x = 139,265,996.52
  5. Step 5: Solve for x
    x = 139,265,996.52/13,221.56
  6. Step 6: Final answer
    x = 10,533.25

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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.