Home / 30,933.96-42,686.50-18,187.66

Finding the Fourth Proportional to 30,933.96, 42,686.50 and 18,187.66

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Solution

The fourth proportional to 30,933.96, 42,686.50 and 18,187.66 is: 25,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.96 : 42,686.50 = 18,187.66 : x
  2. Step 2: Convert to fraction form
    30,933.96/42,686.50 = 18,187.66/x
  3. Step 3: Cross multiply
    30,933.96x = 42,686.50 × 18,187.66
  4. Step 4: Simplify right side
    30,933.96x = 776,367,548.59
  5. Step 5: Solve for x
    x = 776,367,548.59/30,933.96
  6. Step 6: Final answer
    x = 25,097.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.