Home / 22,311.48-30,790.84-13,357.28

Finding the Fourth Proportional to 22,311.48, 30,790.84 and 13,357.28

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Solution

The fourth proportional to 22,311.48, 30,790.84 and 13,357.28 is: 18,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.48 : 30,790.84 = 13,357.28 : x
  2. Step 2: Convert to fraction form
    22,311.48/30,790.84 = 13,357.28/x
  3. Step 3: Cross multiply
    22,311.48x = 30,790.84 × 13,357.28
  4. Step 4: Simplify right side
    22,311.48x = 411,281,871.32
  5. Step 5: Solve for x
    x = 411,281,871.32/22,311.48
  6. Step 6: Final answer
    x = 18,433.64

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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.