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Finding the Fourth Proportional to 52,828.63, 79,242.82 and 13,385.63

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Solution

The fourth proportional to 52,828.63, 79,242.82 and 13,385.63 is: 20,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,828.63 : 79,242.82 = 13,385.63 : x
  2. Step 2: Convert to fraction form
    52,828.63/79,242.82 = 13,385.63/x
  3. Step 3: Cross multiply
    52,828.63x = 79,242.82 × 13,385.63
  4. Step 4: Simplify right side
    52,828.63x = 1,060,715,068.68
  5. Step 5: Solve for x
    x = 1,060,715,068.68/52,828.63
  6. Step 6: Final answer
    x = 20,078.41

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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.