Home / 28,361.04-42,558.84-12,780.24

Finding the Fourth Proportional to 28,361.04, 42,558.84 and 12,780.24

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Solution

The fourth proportional to 28,361.04, 42,558.84 and 12,780.24 is: 19,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.04 : 42,558.84 = 12,780.24 : x
  2. Step 2: Convert to fraction form
    28,361.04/42,558.84 = 12,780.24/x
  3. Step 3: Cross multiply
    28,361.04x = 42,558.84 × 12,780.24
  4. Step 4: Simplify right side
    28,361.04x = 543,912,189.32
  5. Step 5: Solve for x
    x = 543,912,189.32/28,361.04
  6. Step 6: Final answer
    x = 19,178.15

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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.