Home / 22,235.80-30,685.86-13,288.44

Finding the Fourth Proportional to 22,235.80, 30,685.86 and 13,288.44

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Solution

The fourth proportional to 22,235.80, 30,685.86 and 13,288.44 is: 18,338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,235.80 : 30,685.86 = 13,288.44 : x
  2. Step 2: Convert to fraction form
    22,235.80/30,685.86 = 13,288.44/x
  3. Step 3: Cross multiply
    22,235.80x = 30,685.86 × 13,288.44
  4. Step 4: Simplify right side
    22,235.80x = 407,767,209.46
  5. Step 5: Solve for x
    x = 407,767,209.46/22,235.80
  6. Step 6: Final answer
    x = 18,338.32

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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.