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Finding the Fourth Proportional to 28,645.53, 42,962.70 and 14,410.20

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Solution

The fourth proportional to 28,645.53, 42,962.70 and 14,410.20 is: 21,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.53 : 42,962.70 = 14,410.20 : x
  2. Step 2: Convert to fraction form
    28,645.53/42,962.70 = 14,410.20/x
  3. Step 3: Cross multiply
    28,645.53x = 42,962.70 × 14,410.20
  4. Step 4: Simplify right side
    28,645.53x = 619,101,099.54
  5. Step 5: Solve for x
    x = 619,101,099.54/28,645.53
  6. Step 6: Final answer
    x = 21,612.49

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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.