Home / 20,054.96-29,960.55-12,977.31

Finding the Fourth Proportional to 20,054.96, 29,960.55 and 12,977.31

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Solution

The fourth proportional to 20,054.96, 29,960.55 and 12,977.31 is: 19,387.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,054.96 : 29,960.55 = 12,977.31 : x
  2. Step 2: Convert to fraction form
    20,054.96/29,960.55 = 12,977.31/x
  3. Step 3: Cross multiply
    20,054.96x = 29,960.55 × 12,977.31
  4. Step 4: Simplify right side
    20,054.96x = 388,807,320.79
  5. Step 5: Solve for x
    x = 388,807,320.79/20,054.96
  6. Step 6: Final answer
    x = 19,387.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.