Home / 10,351.36-15,523.80-5,418.40

Finding the Fourth Proportional to 10,351.36, 15,523.80 and 5,418.40

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Solution

The fourth proportional to 10,351.36, 15,523.80 and 5,418.40 is: 8,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,351.36 : 15,523.80 = 5,418.40 : x
  2. Step 2: Convert to fraction form
    10,351.36/15,523.80 = 5,418.40/x
  3. Step 3: Cross multiply
    10,351.36x = 15,523.80 × 5,418.40
  4. Step 4: Simplify right side
    10,351.36x = 84,114,157.92
  5. Step 5: Solve for x
    x = 84,114,157.92/10,351.36
  6. Step 6: Final answer
    x = 8,125.90

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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.