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Finding the Fourth Proportional to 10,362.80, 15,542.80 and 4,127.40

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Solution

The fourth proportional to 10,362.80, 15,542.80 and 4,127.40 is: 6,190.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,362.80 : 15,542.80 = 4,127.40 : x
  2. Step 2: Convert to fraction form
    10,362.80/15,542.80 = 4,127.40/x
  3. Step 3: Cross multiply
    10,362.80x = 15,542.80 × 4,127.40
  4. Step 4: Simplify right side
    10,362.80x = 64,151,352.72
  5. Step 5: Solve for x
    x = 64,151,352.72/10,362.80
  6. Step 6: Final answer
    x = 6,190.54

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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.