Home / 28,584.12-42,890.80-13,608.16

Finding the Fourth Proportional to 28,584.12, 42,890.80 and 13,608.16

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Solution

The fourth proportional to 28,584.12, 42,890.80 and 13,608.16 is: 20,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,584.12 : 42,890.80 = 13,608.16 : x
  2. Step 2: Convert to fraction form
    28,584.12/42,890.80 = 13,608.16/x
  3. Step 3: Cross multiply
    28,584.12x = 42,890.80 × 13,608.16
  4. Step 4: Simplify right side
    28,584.12x = 583,664,868.93
  5. Step 5: Solve for x
    x = 583,664,868.93/28,584.12
  6. Step 6: Final answer
    x = 20,419.20

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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.