Home / 28,780.40-43,084.20-17,087.60

Finding the Fourth Proportional to 28,780.40, 43,084.20 and 17,087.60

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Solution

The fourth proportional to 28,780.40, 43,084.20 and 17,087.60 is: 25,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.40 : 43,084.20 = 17,087.60 : x
  2. Step 2: Convert to fraction form
    28,780.40/43,084.20 = 17,087.60/x
  3. Step 3: Cross multiply
    28,780.40x = 43,084.20 × 17,087.60
  4. Step 4: Simplify right side
    28,780.40x = 736,205,575.92
  5. Step 5: Solve for x
    x = 736,205,575.92/28,780.40
  6. Step 6: Final answer
    x = 25,580.10

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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.