Home / 19,816.95-29,705.38-12,426.56

Finding the Fourth Proportional to 19,816.95, 29,705.38 and 12,426.56

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Solution

The fourth proportional to 19,816.95, 29,705.38 and 12,426.56 is: 18,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.95 : 29,705.38 = 12,426.56 : x
  2. Step 2: Convert to fraction form
    19,816.95/29,705.38 = 12,426.56/x
  3. Step 3: Cross multiply
    19,816.95x = 29,705.38 × 12,426.56
  4. Step 4: Simplify right side
    19,816.95x = 369,135,855.69
  5. Step 5: Solve for x
    x = 369,135,855.69/19,816.95
  6. Step 6: Final answer
    x = 18,627.28

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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.