Home / 13,216.32-18,217.44-9,017.28

Finding the Fourth Proportional to 13,216.32, 18,217.44 and 9,017.28

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Solution

The fourth proportional to 13,216.32, 18,217.44 and 9,017.28 is: 12,429.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.32 : 18,217.44 = 9,017.28 : x
  2. Step 2: Convert to fraction form
    13,216.32/18,217.44 = 9,017.28/x
  3. Step 3: Cross multiply
    13,216.32x = 18,217.44 × 9,017.28
  4. Step 4: Simplify right side
    13,216.32x = 164,271,757.36
  5. Step 5: Solve for x
    x = 164,271,757.36/13,216.32
  6. Step 6: Final answer
    x = 12,429.46

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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.