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Finding the Fourth Proportional to 43,497.68, 65,245.64 and 13,915.51

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Solution

The fourth proportional to 43,497.68, 65,245.64 and 13,915.51 is: 20,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,497.68 : 65,245.64 = 13,915.51 : x
  2. Step 2: Convert to fraction form
    43,497.68/65,245.64 = 13,915.51/x
  3. Step 3: Cross multiply
    43,497.68x = 65,245.64 × 13,915.51
  4. Step 4: Simplify right side
    43,497.68x = 907,926,123.18
  5. Step 5: Solve for x
    x = 907,926,123.18/43,497.68
  6. Step 6: Final answer
    x = 20,872.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.