Home / 13,631.40-20,447.10-7,059.60

Finding the Fourth Proportional to 13,631.40, 20,447.10 and 7,059.60

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Solution

The fourth proportional to 13,631.40, 20,447.10 and 7,059.60 is: 10,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.40 : 20,447.10 = 7,059.60 : x
  2. Step 2: Convert to fraction form
    13,631.40/20,447.10 = 7,059.60/x
  3. Step 3: Cross multiply
    13,631.40x = 20,447.10 × 7,059.60
  4. Step 4: Simplify right side
    13,631.40x = 144,348,347.16
  5. Step 5: Solve for x
    x = 144,348,347.16/13,631.40
  6. Step 6: Final answer
    x = 10,589.40

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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.