Home / 12,585.14-18,877.76-3,820.13

Finding the Fourth Proportional to 12,585.14, 18,877.76 and 3,820.13

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Solution

The fourth proportional to 12,585.14, 18,877.76 and 3,820.13 is: 5,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.14 : 18,877.76 = 3,820.13 : x
  2. Step 2: Convert to fraction form
    12,585.14/18,877.76 = 3,820.13/x
  3. Step 3: Cross multiply
    12,585.14x = 18,877.76 × 3,820.13
  4. Step 4: Simplify right side
    12,585.14x = 72,115,468.94
  5. Step 5: Solve for x
    x = 72,115,468.94/12,585.14
  6. Step 6: Final answer
    x = 5,730.21

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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.