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Finding the Fourth Proportional to 28,683.84, 43,008.75 and 10,915.84

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Solution

The fourth proportional to 28,683.84, 43,008.75 and 10,915.84 is: 16,367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,683.84 : 43,008.75 = 10,915.84 : x
  2. Step 2: Convert to fraction form
    28,683.84/43,008.75 = 10,915.84/x
  3. Step 3: Cross multiply
    28,683.84x = 43,008.75 × 10,915.84
  4. Step 4: Simplify right side
    28,683.84x = 469,476,526.08
  5. Step 5: Solve for x
    x = 469,476,526.08/28,683.84
  6. Step 6: Final answer
    x = 16,367.28

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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.