Home / 30,633.79-45,956.84-13,989.35

Finding the Fourth Proportional to 30,633.79, 45,956.84 and 13,989.35

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Solution

The fourth proportional to 30,633.79, 45,956.84 and 13,989.35 is: 20,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.79 : 45,956.84 = 13,989.35 : x
  2. Step 2: Convert to fraction form
    30,633.79/45,956.84 = 13,989.35/x
  3. Step 3: Cross multiply
    30,633.79x = 45,956.84 × 13,989.35
  4. Step 4: Simplify right side
    30,633.79x = 642,906,249.71
  5. Step 5: Solve for x
    x = 642,906,249.71/30,633.79
  6. Step 6: Final answer
    x = 20,986.83

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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.