Home / 13,140.48-19,711.96-3,780.48

Finding the Fourth Proportional to 13,140.48, 19,711.96 and 3,780.48

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Solution

The fourth proportional to 13,140.48, 19,711.96 and 3,780.48 is: 5,671.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.48 : 19,711.96 = 3,780.48 : x
  2. Step 2: Convert to fraction form
    13,140.48/19,711.96 = 3,780.48/x
  3. Step 3: Cross multiply
    13,140.48x = 19,711.96 × 3,780.48
  4. Step 4: Simplify right side
    13,140.48x = 74,520,670.54
  5. Step 5: Solve for x
    x = 74,520,670.54/13,140.48
  6. Step 6: Final answer
    x = 5,671.08

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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.