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Finding the Fourth Proportional to 29,485.40, 44,178.80 and 12,820.44

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Solution

The fourth proportional to 29,485.40, 44,178.80 and 12,820.44 is: 19,209.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,485.40 : 44,178.80 = 12,820.44 : x
  2. Step 2: Convert to fraction form
    29,485.40/44,178.80 = 12,820.44/x
  3. Step 3: Cross multiply
    29,485.40x = 44,178.80 × 12,820.44
  4. Step 4: Simplify right side
    29,485.40x = 566,391,654.67
  5. Step 5: Solve for x
    x = 566,391,654.67/29,485.40
  6. Step 6: Final answer
    x = 19,209.22

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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.