Home / 20,246.40-30,331.53-13,661.10

Finding the Fourth Proportional to 20,246.40, 30,331.53 and 13,661.10

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Solution

The fourth proportional to 20,246.40, 30,331.53 and 13,661.10 is: 20,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.40 : 30,331.53 = 13,661.10 : x
  2. Step 2: Convert to fraction form
    20,246.40/30,331.53 = 13,661.10/x
  3. Step 3: Cross multiply
    20,246.40x = 30,331.53 × 13,661.10
  4. Step 4: Simplify right side
    20,246.40x = 414,362,064.48
  5. Step 5: Solve for x
    x = 414,362,064.48/20,246.40
  6. Step 6: Final answer
    x = 20,465.96

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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.