Home / 28,902.40-43,353.60-15,780.40

Finding the Fourth Proportional to 28,902.40, 43,353.60 and 15,780.40

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Solution

The fourth proportional to 28,902.40, 43,353.60 and 15,780.40 is: 23,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.40 : 43,353.60 = 15,780.40 : x
  2. Step 2: Convert to fraction form
    28,902.40/43,353.60 = 15,780.40/x
  3. Step 3: Cross multiply
    28,902.40x = 43,353.60 × 15,780.40
  4. Step 4: Simplify right side
    28,902.40x = 684,137,149.44
  5. Step 5: Solve for x
    x = 684,137,149.44/28,902.40
  6. Step 6: Final answer
    x = 23,670.60

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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.