Home / 13,131.20-19,701.60-5,345.60

Finding the Fourth Proportional to 13,131.20, 19,701.60 and 5,345.60

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Solution

The fourth proportional to 13,131.20, 19,701.60 and 5,345.60 is: 8,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.20 : 19,701.60 = 5,345.60 : x
  2. Step 2: Convert to fraction form
    13,131.20/19,701.60 = 5,345.60/x
  3. Step 3: Cross multiply
    13,131.20x = 19,701.60 × 5,345.60
  4. Step 4: Simplify right side
    13,131.20x = 105,316,872.96
  5. Step 5: Solve for x
    x = 105,316,872.96/13,131.20
  6. Step 6: Final answer
    x = 8,020.35

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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.