Home / 13,624.41-20,430.81-5,189.49

Finding the Fourth Proportional to 13,624.41, 20,430.81 and 5,189.49

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Solution

The fourth proportional to 13,624.41, 20,430.81 and 5,189.49 is: 7,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.41 : 20,430.81 = 5,189.49 : x
  2. Step 2: Convert to fraction form
    13,624.41/20,430.81 = 5,189.49/x
  3. Step 3: Cross multiply
    13,624.41x = 20,430.81 × 5,189.49
  4. Step 4: Simplify right side
    13,624.41x = 106,025,484.19
  5. Step 5: Solve for x
    x = 106,025,484.19/13,624.41
  6. Step 6: Final answer
    x = 7,782.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.