Home / 30,977.96-42,745.93-18,228.33

Finding the Fourth Proportional to 30,977.96, 42,745.93 and 18,228.33

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Solution

The fourth proportional to 30,977.96, 42,745.93 and 18,228.33 is: 25,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.96 : 42,745.93 = 18,228.33 : x
  2. Step 2: Convert to fraction form
    30,977.96/42,745.93 = 18,228.33/x
  3. Step 3: Cross multiply
    30,977.96x = 42,745.93 × 18,228.33
  4. Step 4: Simplify right side
    30,977.96x = 779,186,872.63
  5. Step 5: Solve for x
    x = 779,186,872.63/30,977.96
  6. Step 6: Final answer
    x = 25,152.95

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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.