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Finding the Fourth Proportional to 13,387.78, 20,084.52 and 4,027.02

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Solution

The fourth proportional to 13,387.78, 20,084.52 and 4,027.02 is: 6,041.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.78 : 20,084.52 = 4,027.02 : x
  2. Step 2: Convert to fraction form
    13,387.78/20,084.52 = 4,027.02/x
  3. Step 3: Cross multiply
    13,387.78x = 20,084.52 × 4,027.02
  4. Step 4: Simplify right side
    13,387.78x = 80,880,703.51
  5. Step 5: Solve for x
    x = 80,880,703.51/13,387.78
  6. Step 6: Final answer
    x = 6,041.38

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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.