Home / 19,420.80-29,145.60-12,844.80

Finding the Fourth Proportional to 19,420.80, 29,145.60 and 12,844.80

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Solution

The fourth proportional to 19,420.80, 29,145.60 and 12,844.80 is: 19,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.80 : 29,145.60 = 12,844.80 : x
  2. Step 2: Convert to fraction form
    19,420.80/29,145.60 = 12,844.80/x
  3. Step 3: Cross multiply
    19,420.80x = 29,145.60 × 12,844.80
  4. Step 4: Simplify right side
    19,420.80x = 374,369,402.88
  5. Step 5: Solve for x
    x = 374,369,402.88/19,420.80
  6. Step 6: Final answer
    x = 19,276.72

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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.