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Finding the Fourth Proportional to 12,700.84, 19,051.68 and 4,380.76

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Solution

The fourth proportional to 12,700.84, 19,051.68 and 4,380.76 is: 6,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.84 : 19,051.68 = 4,380.76 : x
  2. Step 2: Convert to fraction form
    12,700.84/19,051.68 = 4,380.76/x
  3. Step 3: Cross multiply
    12,700.84x = 19,051.68 × 4,380.76
  4. Step 4: Simplify right side
    12,700.84x = 83,460,837.68
  5. Step 5: Solve for x
    x = 83,460,837.68/12,700.84
  6. Step 6: Final answer
    x = 6,571.28

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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.