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Finding the Fourth Proportional to 12,803.59, 19,205.38 and 4,039.19

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Solution

The fourth proportional to 12,803.59, 19,205.38 and 4,039.19 is: 6,058.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.59 : 19,205.38 = 4,039.19 : x
  2. Step 2: Convert to fraction form
    12,803.59/19,205.38 = 4,039.19/x
  3. Step 3: Cross multiply
    12,803.59x = 19,205.38 × 4,039.19
  4. Step 4: Simplify right side
    12,803.59x = 77,574,178.84
  5. Step 5: Solve for x
    x = 77,574,178.84/12,803.59
  6. Step 6: Final answer
    x = 6,058.78

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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.