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Finding the Fourth Proportional to 12,700.59, 19,051.80 and 4,380.49

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Solution

The fourth proportional to 12,700.59, 19,051.80 and 4,380.49 is: 6,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.59 : 19,051.80 = 4,380.49 : x
  2. Step 2: Convert to fraction form
    12,700.59/19,051.80 = 4,380.49/x
  3. Step 3: Cross multiply
    12,700.59x = 19,051.80 × 4,380.49
  4. Step 4: Simplify right side
    12,700.59x = 83,456,228.70
  5. Step 5: Solve for x
    x = 83,456,228.70/12,700.59
  6. Step 6: Final answer
    x = 6,571.05

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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.