Home / 30,135.71-45,186.55-12,361.43

Finding the Fourth Proportional to 30,135.71, 45,186.55 and 12,361.43

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Solution

The fourth proportional to 30,135.71, 45,186.55 and 12,361.43 is: 18,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.71 : 45,186.55 = 12,361.43 : x
  2. Step 2: Convert to fraction form
    30,135.71/45,186.55 = 12,361.43/x
  3. Step 3: Cross multiply
    30,135.71x = 45,186.55 × 12,361.43
  4. Step 4: Simplify right side
    30,135.71x = 558,570,374.77
  5. Step 5: Solve for x
    x = 558,570,374.77/30,135.71
  6. Step 6: Final answer
    x = 18,535.17

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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.