Home / 9,720.36-13,415.22-5,528.88

Finding the Fourth Proportional to 9,720.36, 13,415.22 and 5,528.88

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Solution

The fourth proportional to 9,720.36, 13,415.22 and 5,528.88 is: 7,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.36 : 13,415.22 = 5,528.88 : x
  2. Step 2: Convert to fraction form
    9,720.36/13,415.22 = 5,528.88/x
  3. Step 3: Cross multiply
    9,720.36x = 13,415.22 × 5,528.88
  4. Step 4: Simplify right side
    9,720.36x = 74,171,141.55
  5. Step 5: Solve for x
    x = 74,171,141.55/9,720.36
  6. Step 6: Final answer
    x = 7,630.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.