Home / 13,430.81-20,146.19-4,665.80

Finding the Fourth Proportional to 13,430.81, 20,146.19 and 4,665.80

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Solution

The fourth proportional to 13,430.81, 20,146.19 and 4,665.80 is: 6,998.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.81 : 20,146.19 = 4,665.80 : x
  2. Step 2: Convert to fraction form
    13,430.81/20,146.19 = 4,665.80/x
  3. Step 3: Cross multiply
    13,430.81x = 20,146.19 × 4,665.80
  4. Step 4: Simplify right side
    13,430.81x = 93,998,093.30
  5. Step 5: Solve for x
    x = 93,998,093.30/13,430.81
  6. Step 6: Final answer
    x = 6,998.69

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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.