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Finding the Fourth Proportional to 22,322.88, 30,800.40 and 13,368.72

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Solution

The fourth proportional to 22,322.88, 30,800.40 and 13,368.72 is: 18,445.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,322.88 : 30,800.40 = 13,368.72 : x
  2. Step 2: Convert to fraction form
    22,322.88/30,800.40 = 13,368.72/x
  3. Step 3: Cross multiply
    22,322.88x = 30,800.40 × 13,368.72
  4. Step 4: Simplify right side
    22,322.88x = 411,761,923.49
  5. Step 5: Solve for x
    x = 411,761,923.49/22,322.88
  6. Step 6: Final answer
    x = 18,445.73

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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.